Influence of inter-field communication on neuronal response synchrony across auditory cortex
Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involve...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Carrasco, Andres [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2013transfer abstract |
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| Schlagwörter: |
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| Umfang: |
13 |
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| Übergeordnetes Werk: |
Enthalten in: Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate - Gelybó, Gy. ELSEVIER, 2021, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:304 ; year:2013 ; pages:57-69 ; extent:13 |
| Links: |
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| DOI / URN: |
10.1016/j.heares.2013.05.012 |
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| 520 | |a Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. | ||
| 520 | |a Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. | ||
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10.1016/j.heares.2013.05.012 doi GBVA2013012000021.pica (DE-627)ELV033148856 (ELSEVIER)S0378-5955(13)00142-1 DE-627 ger DE-627 rakwb eng 570 570 DE-600 630 640 VZ 48.00 bkl Carrasco, Andres verfasserin aut Influence of inter-field communication on neuronal response synchrony across auditory cortex 2013transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. ss Elsevier A Elsevier AII Elsevier D Elsevier IN Elsevier AAF Elsevier AI Elsevier FAES Elsevier vPE Elsevier aes Elsevier P Elsevier PAF Elsevier T Elsevier DZ Elsevier V Elsevier VPAF Elsevier dPE Elsevier VAF Elsevier iPE Elsevier pes Elsevier Lomber, Stephen G. oth Enthalten in Elsevier Science Gelybó, Gy. ELSEVIER Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate 2021 Amsterdam [u.a.] (DE-627)ELV007020546 volume:304 year:2013 pages:57-69 extent:13 https://doi.org/10.1016/j.heares.2013.05.012 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-FOR 48.00 Land- und Forstwirtschaft: Allgemeines VZ AR 304 2013 57-69 13 045F 570 |
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10.1016/j.heares.2013.05.012 doi GBVA2013012000021.pica (DE-627)ELV033148856 (ELSEVIER)S0378-5955(13)00142-1 DE-627 ger DE-627 rakwb eng 570 570 DE-600 630 640 VZ 48.00 bkl Carrasco, Andres verfasserin aut Influence of inter-field communication on neuronal response synchrony across auditory cortex 2013transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. ss Elsevier A Elsevier AII Elsevier D Elsevier IN Elsevier AAF Elsevier AI Elsevier FAES Elsevier vPE Elsevier aes Elsevier P Elsevier PAF Elsevier T Elsevier DZ Elsevier V Elsevier VPAF Elsevier dPE Elsevier VAF Elsevier iPE Elsevier pes Elsevier Lomber, Stephen G. oth Enthalten in Elsevier Science Gelybó, Gy. ELSEVIER Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate 2021 Amsterdam [u.a.] (DE-627)ELV007020546 volume:304 year:2013 pages:57-69 extent:13 https://doi.org/10.1016/j.heares.2013.05.012 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-FOR 48.00 Land- und Forstwirtschaft: Allgemeines VZ AR 304 2013 57-69 13 045F 570 |
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10.1016/j.heares.2013.05.012 doi GBVA2013012000021.pica (DE-627)ELV033148856 (ELSEVIER)S0378-5955(13)00142-1 DE-627 ger DE-627 rakwb eng 570 570 DE-600 630 640 VZ 48.00 bkl Carrasco, Andres verfasserin aut Influence of inter-field communication on neuronal response synchrony across auditory cortex 2013transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. ss Elsevier A Elsevier AII Elsevier D Elsevier IN Elsevier AAF Elsevier AI Elsevier FAES Elsevier vPE Elsevier aes Elsevier P Elsevier PAF Elsevier T Elsevier DZ Elsevier V Elsevier VPAF Elsevier dPE Elsevier VAF Elsevier iPE Elsevier pes Elsevier Lomber, Stephen G. oth Enthalten in Elsevier Science Gelybó, Gy. ELSEVIER Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate 2021 Amsterdam [u.a.] (DE-627)ELV007020546 volume:304 year:2013 pages:57-69 extent:13 https://doi.org/10.1016/j.heares.2013.05.012 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-FOR 48.00 Land- und Forstwirtschaft: Allgemeines VZ AR 304 2013 57-69 13 045F 570 |
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10.1016/j.heares.2013.05.012 doi GBVA2013012000021.pica (DE-627)ELV033148856 (ELSEVIER)S0378-5955(13)00142-1 DE-627 ger DE-627 rakwb eng 570 570 DE-600 630 640 VZ 48.00 bkl Carrasco, Andres verfasserin aut Influence of inter-field communication on neuronal response synchrony across auditory cortex 2013transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. ss Elsevier A Elsevier AII Elsevier D Elsevier IN Elsevier AAF Elsevier AI Elsevier FAES Elsevier vPE Elsevier aes Elsevier P Elsevier PAF Elsevier T Elsevier DZ Elsevier V Elsevier VPAF Elsevier dPE Elsevier VAF Elsevier iPE Elsevier pes Elsevier Lomber, Stephen G. oth Enthalten in Elsevier Science Gelybó, Gy. ELSEVIER Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate 2021 Amsterdam [u.a.] (DE-627)ELV007020546 volume:304 year:2013 pages:57-69 extent:13 https://doi.org/10.1016/j.heares.2013.05.012 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-FOR 48.00 Land- und Forstwirtschaft: Allgemeines VZ AR 304 2013 57-69 13 045F 570 |
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10.1016/j.heares.2013.05.012 doi GBVA2013012000021.pica (DE-627)ELV033148856 (ELSEVIER)S0378-5955(13)00142-1 DE-627 ger DE-627 rakwb eng 570 570 DE-600 630 640 VZ 48.00 bkl Carrasco, Andres verfasserin aut Influence of inter-field communication on neuronal response synchrony across auditory cortex 2013transfer abstract 13 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. ss Elsevier A Elsevier AII Elsevier D Elsevier IN Elsevier AAF Elsevier AI Elsevier FAES Elsevier vPE Elsevier aes Elsevier P Elsevier PAF Elsevier T Elsevier DZ Elsevier V Elsevier VPAF Elsevier dPE Elsevier VAF Elsevier iPE Elsevier pes Elsevier Lomber, Stephen G. oth Enthalten in Elsevier Science Gelybó, Gy. ELSEVIER Effect of tillage and crop type on soil respiration in a long-term field experiment on chernozem soil under temperate climate 2021 Amsterdam [u.a.] (DE-627)ELV007020546 volume:304 year:2013 pages:57-69 extent:13 https://doi.org/10.1016/j.heares.2013.05.012 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-FOR 48.00 Land- und Forstwirtschaft: Allgemeines VZ AR 304 2013 57-69 13 045F 570 |
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Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. |
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Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. |
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Sensory information is encoded by cortical neurons in the form of synaptic discharge time and rate level. These neuronal codes generate response patterns across cell assemblies that are crucial to various cognitive functions. Despite pivotal information about structural and cognitive factors involved in the generation of synchronous neuronal responses such as stimulus context, attention, age, cortical depth, sensory experience, and receptive field properties, the influence of cortico-cortical connectivity on the emergence of neuronal response patterns is poorly understood. The present investigation assesses the role of cortico-cortical connectivity in the modulation of neuronal discharge synchrony across auditory cortex cell-assemblies. Acute single-unit recording techniques in combination with reversible cooling deactivation procedures were used in the domestic cat (Felis catus). Recording electrodes were positioned across primary and non-primary auditory fields and neuronal activity was measured before, during, and after synaptic deactivation of adjacent cortical regions in the presence of acoustic stimulation. Cross-correlation functions of simultaneously recorded units were generated and changes in response synchrony levels across cooling conditions were measured. Data analyses revealed significant decreases in response time coincidences between cortical neurons during periods of cortical deactivation. Collectively, the results of the present investigation demonstrate that cortical neurons participate in the modulation of response synchrony levels across neuronal assemblies of primary and non-primary auditory fields. |
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