The role of correlations in direction and contrast coding in the primary visual cortex

Autores
Montani, Fernando Fabián; Kohn, Adam; Smith, Matthew; Schultz, Simon R.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The spiking activity of nearby cortical neurons is not independent. Numerous studies have explored the importance of this correlated responsivity for visual coding and perception, often by comparing the information conveyed by pairs of simultaneously recorded neurons with the sum of information provided by the respective individual cells. Pairwise responses typically provide slightly more information sothat encodingis weakly synergistic. The simple comparison between pairwise and summedindividual responses conflates several forms of correlation, however, making it impossible to judge the relative importance of synchronous spiking, basic tuning properties, and stimulus-independent and stimulus-dependent correlation. We have applied an information theoretic approach to this question, using the responses of pairs of neurons to drifting sinusoidal gratings of different directions and contrasts that have been recorded inthe primary visual cortex of anesthetized macaque monkeys. Our approach allows usto break downthe information provided by pairs of neurons into a number of components. This analysis reveals that, although synchrony is prevalent and informative, the additional information it provides frequently is offset by the redundancy arising from the similar tuning properties of the two cells. Thus coding is approximately independent with weak synergy or redundancy arising, depending on the similarity in tuning and the temporal precision of the analysis. We suggest that this would allow cortical circuits to enjoy the stability provided by having similarly tuned neurons without suffering the penalty of redundancy, because the associated information transmission deficit is compensated for by stimulus-dependent synchrony.
Facultad de Ciencias Exactas
Materia
Física
Neuroscience
Neural Coding
Visual Cortex
cerebral cortex
extracellular recording
information theory
neuronal ensembles
redundancy
striate cortex
synchronization
synchrony
synergy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/160198

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/160198
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network_name_str SEDICI (UNLP)
spelling The role of correlations in direction and contrast coding in the primary visual cortexMontani, Fernando FabiánKohn, AdamSmith, MatthewSchultz, Simon R.FísicaNeuroscienceNeural CodingVisual Cortexcerebral cortexextracellular recordinginformation theoryneuronal ensemblesredundancystriate cortexsynchronizationsynchronysynergyThe spiking activity of nearby cortical neurons is not independent. Numerous studies have explored the importance of this correlated responsivity for visual coding and perception, often by comparing the information conveyed by pairs of simultaneously recorded neurons with the sum of information provided by the respective individual cells. Pairwise responses typically provide slightly more information sothat encodingis weakly synergistic. The simple comparison between pairwise and summedindividual responses conflates several forms of correlation, however, making it impossible to judge the relative importance of synchronous spiking, basic tuning properties, and stimulus-independent and stimulus-dependent correlation. We have applied an information theoretic approach to this question, using the responses of pairs of neurons to drifting sinusoidal gratings of different directions and contrasts that have been recorded inthe primary visual cortex of anesthetized macaque monkeys. Our approach allows usto break downthe information provided by pairs of neurons into a number of components. This analysis reveals that, although synchrony is prevalent and informative, the additional information it provides frequently is offset by the redundancy arising from the similar tuning properties of the two cells. Thus coding is approximately independent with weak synergy or redundancy arising, depending on the similarity in tuning and the temporal precision of the analysis. We suggest that this would allow cortical circuits to enjoy the stability provided by having similarly tuned neurons without suffering the penalty of redundancy, because the associated information transmission deficit is compensated for by stimulus-dependent synchrony.Facultad de Ciencias Exactas2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2338-2348http://sedici.unlp.edu.ar/handle/10915/160198enginfo:eu-repo/semantics/altIdentifier/issn/0270-6474info:eu-repo/semantics/altIdentifier/issn/1529-2401info:eu-repo/semantics/altIdentifier/doi/10.1523/JNEUROSCI.3417-06.2007info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:41:56Zoai:sedici.unlp.edu.ar:10915/160198Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:41:56.61SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The role of correlations in direction and contrast coding in the primary visual cortex
title The role of correlations in direction and contrast coding in the primary visual cortex
spellingShingle The role of correlations in direction and contrast coding in the primary visual cortex
Montani, Fernando Fabián
Física
Neuroscience
Neural Coding
Visual Cortex
cerebral cortex
extracellular recording
information theory
neuronal ensembles
redundancy
striate cortex
synchronization
synchrony
synergy
title_short The role of correlations in direction and contrast coding in the primary visual cortex
title_full The role of correlations in direction and contrast coding in the primary visual cortex
title_fullStr The role of correlations in direction and contrast coding in the primary visual cortex
title_full_unstemmed The role of correlations in direction and contrast coding in the primary visual cortex
title_sort The role of correlations in direction and contrast coding in the primary visual cortex
dc.creator.none.fl_str_mv Montani, Fernando Fabián
Kohn, Adam
Smith, Matthew
Schultz, Simon R.
author Montani, Fernando Fabián
author_facet Montani, Fernando Fabián
Kohn, Adam
Smith, Matthew
Schultz, Simon R.
author_role author
author2 Kohn, Adam
Smith, Matthew
Schultz, Simon R.
author2_role author
author
author
dc.subject.none.fl_str_mv Física
Neuroscience
Neural Coding
Visual Cortex
cerebral cortex
extracellular recording
information theory
neuronal ensembles
redundancy
striate cortex
synchronization
synchrony
synergy
topic Física
Neuroscience
Neural Coding
Visual Cortex
cerebral cortex
extracellular recording
information theory
neuronal ensembles
redundancy
striate cortex
synchronization
synchrony
synergy
dc.description.none.fl_txt_mv The spiking activity of nearby cortical neurons is not independent. Numerous studies have explored the importance of this correlated responsivity for visual coding and perception, often by comparing the information conveyed by pairs of simultaneously recorded neurons with the sum of information provided by the respective individual cells. Pairwise responses typically provide slightly more information sothat encodingis weakly synergistic. The simple comparison between pairwise and summedindividual responses conflates several forms of correlation, however, making it impossible to judge the relative importance of synchronous spiking, basic tuning properties, and stimulus-independent and stimulus-dependent correlation. We have applied an information theoretic approach to this question, using the responses of pairs of neurons to drifting sinusoidal gratings of different directions and contrasts that have been recorded inthe primary visual cortex of anesthetized macaque monkeys. Our approach allows usto break downthe information provided by pairs of neurons into a number of components. This analysis reveals that, although synchrony is prevalent and informative, the additional information it provides frequently is offset by the redundancy arising from the similar tuning properties of the two cells. Thus coding is approximately independent with weak synergy or redundancy arising, depending on the similarity in tuning and the temporal precision of the analysis. We suggest that this would allow cortical circuits to enjoy the stability provided by having similarly tuned neurons without suffering the penalty of redundancy, because the associated information transmission deficit is compensated for by stimulus-dependent synchrony.
Facultad de Ciencias Exactas
description The spiking activity of nearby cortical neurons is not independent. Numerous studies have explored the importance of this correlated responsivity for visual coding and perception, often by comparing the information conveyed by pairs of simultaneously recorded neurons with the sum of information provided by the respective individual cells. Pairwise responses typically provide slightly more information sothat encodingis weakly synergistic. The simple comparison between pairwise and summedindividual responses conflates several forms of correlation, however, making it impossible to judge the relative importance of synchronous spiking, basic tuning properties, and stimulus-independent and stimulus-dependent correlation. We have applied an information theoretic approach to this question, using the responses of pairs of neurons to drifting sinusoidal gratings of different directions and contrasts that have been recorded inthe primary visual cortex of anesthetized macaque monkeys. Our approach allows usto break downthe information provided by pairs of neurons into a number of components. This analysis reveals that, although synchrony is prevalent and informative, the additional information it provides frequently is offset by the redundancy arising from the similar tuning properties of the two cells. Thus coding is approximately independent with weak synergy or redundancy arising, depending on the similarity in tuning and the temporal precision of the analysis. We suggest that this would allow cortical circuits to enjoy the stability provided by having similarly tuned neurons without suffering the penalty of redundancy, because the associated information transmission deficit is compensated for by stimulus-dependent synchrony.
publishDate 2007
dc.date.none.fl_str_mv 2007
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/160198
url http://sedici.unlp.edu.ar/handle/10915/160198
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0270-6474
info:eu-repo/semantics/altIdentifier/issn/1529-2401
info:eu-repo/semantics/altIdentifier/doi/10.1523/JNEUROSCI.3417-06.2007
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
2338-2348
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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