Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Psychology & Neuroscience (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882011000100004 |
Resumo: | In the present investigation we mapped the primary visual area of the South American diurnal rodent, Dasyprocta aguti, by standardized electrophysiological mapping techniques. In particular, we performed a series of mapping experiments of the visual streak in the primary visual cortex. We found that the representation of the visual streak in V1 is greatly expanded, the nasal 10 degrees of the visual streak representation occupies ten times more cortical area than equivalent areas in the central or temporal representation. Comparison of these data with those on the density of ganglion cells in the retina at corresponding locations in the visual field reveal a significant mismatch between these two variables. The nasal representation is greatly expanded along the horizontal meridian in V1 as compared to the central and temporal regions whereas the density of ganglion cells decreases with progression along the visual streak from central region towards the nasal or temporal visual field. A review of the available data reveals that all lateral-eyed mammals exhibit a similar mismatch between the retinal and cortical representation of the visual field, and this mismatches is greater in those species with well defined visual streaks such as rabbit and agouti. |
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Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyeshorizontal meridianV1 mapretinal ganglion cellslateral-eyed mammalsIn the present investigation we mapped the primary visual area of the South American diurnal rodent, Dasyprocta aguti, by standardized electrophysiological mapping techniques. In particular, we performed a series of mapping experiments of the visual streak in the primary visual cortex. We found that the representation of the visual streak in V1 is greatly expanded, the nasal 10 degrees of the visual streak representation occupies ten times more cortical area than equivalent areas in the central or temporal representation. Comparison of these data with those on the density of ganglion cells in the retina at corresponding locations in the visual field reveal a significant mismatch between these two variables. The nasal representation is greatly expanded along the horizontal meridian in V1 as compared to the central and temporal regions whereas the density of ganglion cells decreases with progression along the visual streak from central region towards the nasal or temporal visual field. A review of the available data reveals that all lateral-eyed mammals exhibit a similar mismatch between the retinal and cortical representation of the visual field, and this mismatches is greater in those species with well defined visual streaks such as rabbit and agouti.Pontificia Universidade Católica do Rio de JaneiroUniversidade de BrasíliaUniversidade de São Paulo2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882011000100004Psychology & Neuroscience v.4 n.1 2011reponame:Psychology & Neuroscience (Online)instname:Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC)instacron:PUCRJ10.3922/j.psns.2011.1.004info:eu-repo/semantics/openAccessPicanço-Diniz,Cristovam W.Rocha,Emiliana G.Silveira,Luiz Carlos L.Elston,GuyOswaldo-Cruz,Eduardoeng2011-08-23T00:00:00Zoai:scielo:S1983-32882011000100004Revistahttps://www.apa.org/pubs/journals/pnePRIhttps://old.scielo.br/oai/scielo-oai.phppsycneuro@psycneuro.org1983-32881984-3054opendoar:2011-08-23T00:00Psychology & Neuroscience (Online) - Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC)false |
dc.title.none.fl_str_mv |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
title |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
spellingShingle |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes Picanço-Diniz,Cristovam W. horizontal meridian V1 map retinal ganglion cells lateral-eyed mammals |
title_short |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
title_full |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
title_fullStr |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
title_full_unstemmed |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
title_sort |
Cortical representation of the horizon in V1 and peripheral scaling in mammals with lateral eyes |
author |
Picanço-Diniz,Cristovam W. |
author_facet |
Picanço-Diniz,Cristovam W. Rocha,Emiliana G. Silveira,Luiz Carlos L. Elston,Guy Oswaldo-Cruz,Eduardo |
author_role |
author |
author2 |
Rocha,Emiliana G. Silveira,Luiz Carlos L. Elston,Guy Oswaldo-Cruz,Eduardo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Picanço-Diniz,Cristovam W. Rocha,Emiliana G. Silveira,Luiz Carlos L. Elston,Guy Oswaldo-Cruz,Eduardo |
dc.subject.por.fl_str_mv |
horizontal meridian V1 map retinal ganglion cells lateral-eyed mammals |
topic |
horizontal meridian V1 map retinal ganglion cells lateral-eyed mammals |
description |
In the present investigation we mapped the primary visual area of the South American diurnal rodent, Dasyprocta aguti, by standardized electrophysiological mapping techniques. In particular, we performed a series of mapping experiments of the visual streak in the primary visual cortex. We found that the representation of the visual streak in V1 is greatly expanded, the nasal 10 degrees of the visual streak representation occupies ten times more cortical area than equivalent areas in the central or temporal representation. Comparison of these data with those on the density of ganglion cells in the retina at corresponding locations in the visual field reveal a significant mismatch between these two variables. The nasal representation is greatly expanded along the horizontal meridian in V1 as compared to the central and temporal regions whereas the density of ganglion cells decreases with progression along the visual streak from central region towards the nasal or temporal visual field. A review of the available data reveals that all lateral-eyed mammals exhibit a similar mismatch between the retinal and cortical representation of the visual field, and this mismatches is greater in those species with well defined visual streaks such as rabbit and agouti. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882011000100004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-32882011000100004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.3922/j.psns.2011.1.004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Pontificia Universidade Católica do Rio de Janeiro Universidade de Brasília Universidade de São Paulo |
publisher.none.fl_str_mv |
Pontificia Universidade Católica do Rio de Janeiro Universidade de Brasília Universidade de São Paulo |
dc.source.none.fl_str_mv |
Psychology & Neuroscience v.4 n.1 2011 reponame:Psychology & Neuroscience (Online) instname:Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) instacron:PUCRJ |
instname_str |
Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) |
instacron_str |
PUCRJ |
institution |
PUCRJ |
reponame_str |
Psychology & Neuroscience (Online) |
collection |
Psychology & Neuroscience (Online) |
repository.name.fl_str_mv |
Psychology & Neuroscience (Online) - Instituto Brasileiro de Neuropsicologia e Comportamento (IBNeC) |
repository.mail.fl_str_mv |
psycneuro@psycneuro.org |
_version_ |
1754821072395436032 |