Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates
Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investi...
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| Autor*in: |
Roesmann, Kati [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements - Nicosia, Alessia ELSEVIER, 2017, a journal of brain function, Orlando, Fla |
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| Übergeordnetes Werk: |
volume:205 ; year:2020 ; day:15 ; month:01 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.neuroimage.2019.116302 |
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ELV048782378 |
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| 245 | 1 | 0 | |a Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates |
| 264 | 1 | |c 2020transfer abstract | |
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| 520 | |a Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. | ||
| 520 | |a Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. | ||
| 650 | 7 | |a Fear generalization |2 Elsevier | |
| 650 | 7 | |a Motivated attention |2 Elsevier | |
| 650 | 7 | |a EEG |2 Elsevier | |
| 650 | 7 | |a Contingency awareness |2 Elsevier | |
| 650 | 7 | |a MEG |2 Elsevier | |
| 650 | 7 | |a Fear conditioning |2 Elsevier | |
| 700 | 1 | |a Wiens, Nele |4 oth | |
| 700 | 1 | |a Winker, Constantin |4 oth | |
| 700 | 1 | |a Rehbein, Maimu Alissa |4 oth | |
| 700 | 1 | |a Wessing, Ida |4 oth | |
| 700 | 1 | |a Junghoefer, Markus |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Academic Press |a Nicosia, Alessia ELSEVIER |t Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements |d 2017 |d a journal of brain function |g Orlando, Fla |w (DE-627)ELV001942808 |
| 773 | 1 | 8 | |g volume:205 |g year:2020 |g day:15 |g month:01 |g pages:0 |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.neuroimage.2019.116302 |3 Volltext |
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2020transfer abstract |
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2020 |
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10.1016/j.neuroimage.2019.116302 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV048782378 (ELSEVIER)S1053-8119(19)30893-6 DE-627 ger DE-627 rakwb eng Roesmann, Kati verfasserin aut Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Fear generalization Elsevier Motivated attention Elsevier EEG Elsevier Contingency awareness Elsevier MEG Elsevier Fear conditioning Elsevier Wiens, Nele oth Winker, Constantin oth Rehbein, Maimu Alissa oth Wessing, Ida oth Junghoefer, Markus oth Enthalten in Academic Press Nicosia, Alessia ELSEVIER Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements 2017 a journal of brain function Orlando, Fla (DE-627)ELV001942808 volume:205 year:2020 day:15 month:01 pages:0 https://doi.org/10.1016/j.neuroimage.2019.116302 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 205 2020 15 0115 0 |
| spelling |
10.1016/j.neuroimage.2019.116302 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV048782378 (ELSEVIER)S1053-8119(19)30893-6 DE-627 ger DE-627 rakwb eng Roesmann, Kati verfasserin aut Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Fear generalization Elsevier Motivated attention Elsevier EEG Elsevier Contingency awareness Elsevier MEG Elsevier Fear conditioning Elsevier Wiens, Nele oth Winker, Constantin oth Rehbein, Maimu Alissa oth Wessing, Ida oth Junghoefer, Markus oth Enthalten in Academic Press Nicosia, Alessia ELSEVIER Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements 2017 a journal of brain function Orlando, Fla (DE-627)ELV001942808 volume:205 year:2020 day:15 month:01 pages:0 https://doi.org/10.1016/j.neuroimage.2019.116302 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 205 2020 15 0115 0 |
| allfields_unstemmed |
10.1016/j.neuroimage.2019.116302 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV048782378 (ELSEVIER)S1053-8119(19)30893-6 DE-627 ger DE-627 rakwb eng Roesmann, Kati verfasserin aut Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Fear generalization Elsevier Motivated attention Elsevier EEG Elsevier Contingency awareness Elsevier MEG Elsevier Fear conditioning Elsevier Wiens, Nele oth Winker, Constantin oth Rehbein, Maimu Alissa oth Wessing, Ida oth Junghoefer, Markus oth Enthalten in Academic Press Nicosia, Alessia ELSEVIER Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements 2017 a journal of brain function Orlando, Fla (DE-627)ELV001942808 volume:205 year:2020 day:15 month:01 pages:0 https://doi.org/10.1016/j.neuroimage.2019.116302 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 205 2020 15 0115 0 |
| allfieldsGer |
10.1016/j.neuroimage.2019.116302 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV048782378 (ELSEVIER)S1053-8119(19)30893-6 DE-627 ger DE-627 rakwb eng Roesmann, Kati verfasserin aut Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Fear generalization Elsevier Motivated attention Elsevier EEG Elsevier Contingency awareness Elsevier MEG Elsevier Fear conditioning Elsevier Wiens, Nele oth Winker, Constantin oth Rehbein, Maimu Alissa oth Wessing, Ida oth Junghoefer, Markus oth Enthalten in Academic Press Nicosia, Alessia ELSEVIER Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements 2017 a journal of brain function Orlando, Fla (DE-627)ELV001942808 volume:205 year:2020 day:15 month:01 pages:0 https://doi.org/10.1016/j.neuroimage.2019.116302 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 205 2020 15 0115 0 |
| allfieldsSound |
10.1016/j.neuroimage.2019.116302 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001731.pica (DE-627)ELV048782378 (ELSEVIER)S1053-8119(19)30893-6 DE-627 ger DE-627 rakwb eng Roesmann, Kati verfasserin aut Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. Fear generalization Elsevier Motivated attention Elsevier EEG Elsevier Contingency awareness Elsevier MEG Elsevier Fear conditioning Elsevier Wiens, Nele oth Winker, Constantin oth Rehbein, Maimu Alissa oth Wessing, Ida oth Junghoefer, Markus oth Enthalten in Academic Press Nicosia, Alessia ELSEVIER Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements 2017 a journal of brain function Orlando, Fla (DE-627)ELV001942808 volume:205 year:2020 day:15 month:01 pages:0 https://doi.org/10.1016/j.neuroimage.2019.116302 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U AR 205 2020 15 0115 0 |
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fear generalization of implicit conditioned facial features – behavioral and magnetoencephalographic correlates |
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Fear generalization of implicit conditioned facial features – Behavioral and magnetoencephalographic correlates |
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Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. |
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Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. |
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Acquired fear responses often generalize from conditioned stimuli (CS) towards perceptually similar, but harmless generalization stimuli (GS). Knowledge on similarities between CS and GS may be explicit or implicit. Employing behavioral measures and whole-head magnetoencephalography, we here investigated the neurocognitive mechanisms underpinning implicit fear generalization. Twenty-nine participants underwent a classical conditioning procedure in which 32 different faces were either paired with an aversive scream (16 CS+) or remained unpaired (16 CS-). CS+ and CS- faces systematically differed from each other regarding their ratio of eye distance and mouth width. High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process. |
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High versus low values on this “threat-related feature (TF)” implicitly predicted the presence or absence of the aversive scream. In pre- and post-conditioning phases, all CS and 32 novel GS faces were presented. 16 GS+ faces shared the TF of the 16 CS+ faces, while 16 GS- faces shared the TF of the 16 CS- faces. Behavioral tests confirmed that participants were fully unaware of TF-US contingencies. CS+ compared to CS- faces revealed higher unpleasantness, arousal and US-expectancy ratings. A generalization of these behavioral fear responses to GS+ compared to GS- faces was observed by trend only. Source-estimations of event-related fields showed stronger neural responses to both CS+ and GS+ compared to CS- and GS- in anterior temporal (<100 ms) and temporo-occipital (<150 ms; 553–587 ms) ventral brain regions. Reverse effects were found in dorsal frontal areas (<100 ms; 173–203 ms; 257–290 ms). Neural data also revealed selectively enhanced responses to CS+ but not GS+ stimuli in occipital regions (110–167 ms; 330–413 ms), indicating perceptual discrimination. Our data suggest that the prioritized perceptual analysis of threat-associated conditioned faces in ventral networks rapidly generalizes to novel faces sharing threat-related features. This generalization process occurs in absence of contingency awareness and may thus contribute to implicit attentional biases. The coexisting perceptual discrimination suggests that fear generalization is not a mere consequence of insufficient stimulus discrimination but rather an active, integrative process.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Fear generalization</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Motivated attention</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">EEG</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Contingency awareness</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">MEG</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Fear conditioning</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wiens, Nele</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Winker, Constantin</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Rehbein, Maimu Alissa</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Wessing, Ida</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Junghoefer, Markus</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Academic Press</subfield><subfield code="a">Nicosia, Alessia ELSEVIER</subfield><subfield code="t">Field study of a soft X-ray aerosol neutralizer combined with electrostatic classifiers for nanoparticle size distribution measurements</subfield><subfield code="d">2017</subfield><subfield code="d">a journal of brain function</subfield><subfield code="g">Orlando, Fla</subfield><subfield code="w">(DE-627)ELV001942808</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:205</subfield><subfield code="g">year:2020</subfield><subfield code="g">day:15</subfield><subfield code="g">month:01</subfield><subfield code="g">pages:0</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.neuroimage.2019.116302</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">205</subfield><subfield code="j">2020</subfield><subfield code="b">15</subfield><subfield code="c">0115</subfield><subfield code="h">0</subfield></datafield></record></collection>
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