Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality

Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophreni...
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Autor*in:	Colin Hawco [verfasserIn] Lisa Buchy [verfasserIn] Michael Bodnar [verfasserIn] Sarah Izadi [verfasserIn] Jennifer Dell'Elce [verfasserIn] Katrina Messina [verfasserIn] Ridha Joober [verfasserIn] Ashok Malla [verfasserIn] Martin Lepage [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2015

Schlagwörter:	Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations

Übergeordnetes Werk:	In: NeuroImage: Clinical - Elsevier, 2015, 7(2015), C, Seite 336-346
Übergeordnetes Werk:	volume:7 ; year:2015 ; number:C ; pages:336-346

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.nicl.2014.08.006

Katalog-ID:	DOAJ057655944

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allfields	10.1016/j.nicl.2014.08.006 doi (DE-627)DOAJ057655944 (DE-599)DOAJ13d63222b4154960a9bd1039663049b0 DE-627 ger DE-627 rakwb eng R858-859.7 RC346-429 Colin Hawco verfasserin aut Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations. Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system Lisa Buchy verfasserin aut Michael Bodnar verfasserin aut Sarah Izadi verfasserin aut Jennifer Dell'Elce verfasserin aut Katrina Messina verfasserin aut Ridha Joober verfasserin aut Ashok Malla verfasserin aut Martin Lepage verfasserin aut In NeuroImage: Clinical Elsevier, 2015 7(2015), C, Seite 336-346 (DE-627)735358869 (DE-600)2701571-3 22131582 nnns volume:7 year:2015 number:C pages:336-346 https://doi.org/10.1016/j.nicl.2014.08.006 kostenfrei https://doaj.org/article/13d63222b4154960a9bd1039663049b0 kostenfrei http://www.sciencedirect.com/science/article/pii/S2213158214001156 kostenfrei https://doaj.org/toc/2213-1582 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 7 2015 C 336-346
spelling	10.1016/j.nicl.2014.08.006 doi (DE-627)DOAJ057655944 (DE-599)DOAJ13d63222b4154960a9bd1039663049b0 DE-627 ger DE-627 rakwb eng R858-859.7 RC346-429 Colin Hawco verfasserin aut Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations. Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system Lisa Buchy verfasserin aut Michael Bodnar verfasserin aut Sarah Izadi verfasserin aut Jennifer Dell'Elce verfasserin aut Katrina Messina verfasserin aut Ridha Joober verfasserin aut Ashok Malla verfasserin aut Martin Lepage verfasserin aut In NeuroImage: Clinical Elsevier, 2015 7(2015), C, Seite 336-346 (DE-627)735358869 (DE-600)2701571-3 22131582 nnns volume:7 year:2015 number:C pages:336-346 https://doi.org/10.1016/j.nicl.2014.08.006 kostenfrei https://doaj.org/article/13d63222b4154960a9bd1039663049b0 kostenfrei http://www.sciencedirect.com/science/article/pii/S2213158214001156 kostenfrei https://doaj.org/toc/2213-1582 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 7 2015 C 336-346
allfields_unstemmed	10.1016/j.nicl.2014.08.006 doi (DE-627)DOAJ057655944 (DE-599)DOAJ13d63222b4154960a9bd1039663049b0 DE-627 ger DE-627 rakwb eng R858-859.7 RC346-429 Colin Hawco verfasserin aut Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations. Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system Lisa Buchy verfasserin aut Michael Bodnar verfasserin aut Sarah Izadi verfasserin aut Jennifer Dell'Elce verfasserin aut Katrina Messina verfasserin aut Ridha Joober verfasserin aut Ashok Malla verfasserin aut Martin Lepage verfasserin aut In NeuroImage: Clinical Elsevier, 2015 7(2015), C, Seite 336-346 (DE-627)735358869 (DE-600)2701571-3 22131582 nnns volume:7 year:2015 number:C pages:336-346 https://doi.org/10.1016/j.nicl.2014.08.006 kostenfrei https://doaj.org/article/13d63222b4154960a9bd1039663049b0 kostenfrei http://www.sciencedirect.com/science/article/pii/S2213158214001156 kostenfrei https://doaj.org/toc/2213-1582 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 7 2015 C 336-346
allfieldsGer	10.1016/j.nicl.2014.08.006 doi (DE-627)DOAJ057655944 (DE-599)DOAJ13d63222b4154960a9bd1039663049b0 DE-627 ger DE-627 rakwb eng R858-859.7 RC346-429 Colin Hawco verfasserin aut Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations. Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system Lisa Buchy verfasserin aut Michael Bodnar verfasserin aut Sarah Izadi verfasserin aut Jennifer Dell'Elce verfasserin aut Katrina Messina verfasserin aut Ridha Joober verfasserin aut Ashok Malla verfasserin aut Martin Lepage verfasserin aut In NeuroImage: Clinical Elsevier, 2015 7(2015), C, Seite 336-346 (DE-627)735358869 (DE-600)2701571-3 22131582 nnns volume:7 year:2015 number:C pages:336-346 https://doi.org/10.1016/j.nicl.2014.08.006 kostenfrei https://doaj.org/article/13d63222b4154960a9bd1039663049b0 kostenfrei http://www.sciencedirect.com/science/article/pii/S2213158214001156 kostenfrei https://doaj.org/toc/2213-1582 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 7 2015 C 336-346
allfieldsSound	10.1016/j.nicl.2014.08.006 doi (DE-627)DOAJ057655944 (DE-599)DOAJ13d63222b4154960a9bd1039663049b0 DE-627 ger DE-627 rakwb eng R858-859.7 RC346-429 Colin Hawco verfasserin aut Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations. Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system Lisa Buchy verfasserin aut Michael Bodnar verfasserin aut Sarah Izadi verfasserin aut Jennifer Dell'Elce verfasserin aut Katrina Messina verfasserin aut Ridha Joober verfasserin aut Ashok Malla verfasserin aut Martin Lepage verfasserin aut In NeuroImage: Clinical Elsevier, 2015 7(2015), C, Seite 336-346 (DE-627)735358869 (DE-600)2701571-3 22131582 nnns volume:7 year:2015 number:C pages:336-346 https://doi.org/10.1016/j.nicl.2014.08.006 kostenfrei https://doaj.org/article/13d63222b4154960a9bd1039663049b0 kostenfrei http://www.sciencedirect.com/science/article/pii/S2213158214001156 kostenfrei https://doaj.org/toc/2213-1582 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 7 2015 C 336-346
language	English
source	In NeuroImage: Clinical 7(2015), C, Seite 336-346 volume:7 year:2015 number:C pages:336-346
sourceStr	In NeuroImage: Clinical 7(2015), C, Seite 336-346 volume:7 year:2015 number:C pages:336-346
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations Computer applications to medicine. Medical informatics Neurology. Diseases of the nervous system
isfreeaccess_bool	true
container_title	NeuroImage: Clinical
authorswithroles_txt_mv	Colin Hawco @@aut@@ Lisa Buchy @@aut@@ Michael Bodnar @@aut@@ Sarah Izadi @@aut@@ Jennifer Dell'Elce @@aut@@ Katrina Messina @@aut@@ Ridha Joober @@aut@@ Ashok Malla @@aut@@ Martin Lepage @@aut@@
publishDateDaySort_date	2015-01-01T00:00:00Z
hierarchy_top_id	735358869
id	DOAJ057655944
language_de	englisch
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callnumber-first	R - Medicine
author	Colin Hawco
spellingShingle	Colin Hawco misc R858-859.7 misc RC346-429 misc Source memory misc Schizophrenia misc Associative memory misc First episode misc Virtual reality misc Hallucinations misc Computer applications to medicine. Medical informatics misc Neurology. Diseases of the nervous system Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality
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topic_title	R858-859.7 RC346-429 Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality Source memory Schizophrenia Associative memory First episode Virtual reality Hallucinations
topic	misc R858-859.7 misc RC346-429 misc Source memory misc Schizophrenia misc Associative memory misc First episode misc Virtual reality misc Hallucinations misc Computer applications to medicine. Medical informatics misc Neurology. Diseases of the nervous system
topic_unstemmed	misc R858-859.7 misc RC346-429 misc Source memory misc Schizophrenia misc Associative memory misc First episode misc Virtual reality misc Hallucinations misc Computer applications to medicine. Medical informatics misc Neurology. Diseases of the nervous system
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title	Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality
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title_full	Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality
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title_sort	source retrieval is not properly differentiated from object retrieval in early schizophrenia: an fmri study using virtual reality
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title_auth	Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality
abstract	Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations.
abstractGer	Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations.
abstract_unstemmed	Source memory, the ability to identify the context in which a memory occurred, is impaired in schizophrenia and has been related to clinical symptoms such as hallucinations. The neurobiological underpinnings of this deficit are not well understood. Twenty-five patients with recent onset schizophrenia (within the first 4.5 years of treatment) and twenty-four healthy controls completed a source memory task. Participants navigated through a 3D virtual city, and had 20 encounters of an object with a person at a place. Functional magnetic resonance imaging was performed during a subsequent forced-choice recognition test. Two objects were presented and participants were asked to either identify which object was seen (new vs. old object recognition), or identify which of the two old objects was associated with either the person or the place being presented (source memory recognition). Source memory was examined by contrasting person or place with object. Both patients and controls demonstrated significant neural activity to source memory relative to object memory, though activity in controls was much more widespread. Group differences were observed in several regions, including the medial parietal and cingulate cortex, lateral frontal lobes and right superior temporal gyrus. Patients with schizophrenia did not differentiate between source and object memory in these regions. Positive correlations with hallucination proneness were observed in the left frontal and right middle temporal cortices and cerebellum. Patients with schizophrenia have a deficit in the neural circuits which facilitate source memory, which may underlie both the deficits in this domain and be related to auditory hallucinations.
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title_short	Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality
url	https://doi.org/10.1016/j.nicl.2014.08.006 https://doaj.org/article/13d63222b4154960a9bd1039663049b0 http://www.sciencedirect.com/science/article/pii/S2213158214001156 https://doaj.org/toc/2213-1582
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Source retrieval is not properly differentiated from object retrieval in early schizophrenia: An fMRI study using virtual reality

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