Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/25086 |
Resumo: | One leading hypothesis on the nature of visual callosal connections (CC) is that they replicate features of intrahemispheric lateral connections. However, CC act also in the central part of the binocular visual field. In agreement, early experiments in cats indicated that they provide the ipsilateral eye part of binocular receptive fields (RFs) at the vertical midline (Berlucchi and Rizzolatti, 1968), and play a key role in stereoscopic function. But until today callosal inputs to receptive fields activated by one or both eyes were never compared simultaneously, because callosal function has been often studied by cutting or lesioning either corpus callosum or optic chiasm not allowing such a comparison. To investigate the functional contribution of CC in the intact cat visual system we recorded both monocular and binocular neuronal spiking responses and receptive fields in the 17/18 transition zone during reversible deactivation of the contralateral hemisphere. Unexpectedly from many of the previous reports, we observe no change in ocular dominance during CC deactivation. Throughout the transition zone, a majority of RFs shrink, but several also increase in size. RFs are significantly more affected for ipsi- as opposed to contralateral stimulation, but changes are also observed with binocular stimulation. Noteworthy, RF shrinkages are tiny and not correlated to the profound decreases of monocular and binocular firing rates. They depend more on orientation and direction preference than on eccentricity or ocular dominance of the receiving neuron's RF. Our findings confirm that in binocularly viewing mammals, binocular RFs near the midline are constructed via the direct geniculo-cortical pathway. They also support the idea that input from the two eyes complement each other through CC: Rather than linking parts of RFs separated by the vertical meridian, CC convey a modulatory influence, reflecting the feature selectivity of lateral circuits, with a strong cardinal bias. |
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Conde-Ocazionez, Sergio A.Jungen, ChristianeWunderle, ThomasEriksson, DavidMaciel, Sergio Tulio NeuenschwanderSchmidt, Kerstin Erika2018-04-26T16:42:20Z2018-04-26T16:42:20Z2018-04-16CONDE-OCAZIONEZ, S. A. et al. Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias. [s.l.], Front. Syst. Neurosci., v. 12, p. 11, abr./2018.https://repositorio.ufrn.br/jspui/handle/123456789/2508610.3389/fnsys.2018.00011enginterhemispheric connectivityorientation selectivitybinocularmonocularanticipationCallosal influence on visual receptive fields has an ocular, an orientation-and direction biasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleOne leading hypothesis on the nature of visual callosal connections (CC) is that they replicate features of intrahemispheric lateral connections. However, CC act also in the central part of the binocular visual field. In agreement, early experiments in cats indicated that they provide the ipsilateral eye part of binocular receptive fields (RFs) at the vertical midline (Berlucchi and Rizzolatti, 1968), and play a key role in stereoscopic function. But until today callosal inputs to receptive fields activated by one or both eyes were never compared simultaneously, because callosal function has been often studied by cutting or lesioning either corpus callosum or optic chiasm not allowing such a comparison. To investigate the functional contribution of CC in the intact cat visual system we recorded both monocular and binocular neuronal spiking responses and receptive fields in the 17/18 transition zone during reversible deactivation of the contralateral hemisphere. Unexpectedly from many of the previous reports, we observe no change in ocular dominance during CC deactivation. Throughout the transition zone, a majority of RFs shrink, but several also increase in size. RFs are significantly more affected for ipsi- as opposed to contralateral stimulation, but changes are also observed with binocular stimulation. Noteworthy, RF shrinkages are tiny and not correlated to the profound decreases of monocular and binocular firing rates. They depend more on orientation and direction preference than on eccentricity or ocular dominance of the receiving neuron's RF. Our findings confirm that in binocularly viewing mammals, binocular RFs near the midline are constructed via the direct geniculo-cortical pathway. They also support the idea that input from the two eyes complement each other through CC: Rather than linking parts of RFs separated by the vertical meridian, CC convey a modulatory influence, reflecting the feature selectivity of lateral circuits, with a strong cardinal bias.info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALKerstinSchmidt_ICe_2018_Callosal Influence.pdfKerstinSchmidt_ICe_2018_Callosal Influence.pdfKerstinSchmidt_ICe_2018_Callosal Influenceapplication/pdf1742113https://repositorio.ufrn.br/bitstream/123456789/25086/1/KerstinSchmidt_ICe_2018_Callosal%20Influence.pdf530673610abbda912256874a69847d83MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.ufrn.br/bitstream/123456789/25086/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTKerstinSchmidt_ICe_2018_Callosal Influence.pdf.txtKerstinSchmidt_ICe_2018_Callosal Influence.pdf.txtExtracted texttext/plain70064https://repositorio.ufrn.br/bitstream/123456789/25086/3/KerstinSchmidt_ICe_2018_Callosal%20Influence.pdf.txtac0611bb52f3e3085f7c46c1663c0cc4MD53THUMBNAILKerstinSchmidt_ICe_2018_Callosal Influence.pdf.jpgKerstinSchmidt_ICe_2018_Callosal Influence.pdf.jpgIM Thumbnailimage/jpeg11073https://repositorio.ufrn.br/bitstream/123456789/25086/4/KerstinSchmidt_ICe_2018_Callosal%20Influence.pdf.jpgfd29f15f42fcd792609ea3b7b07ded5fMD54123456789/250862021-07-09 20:02:40.876oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-07-09T23:02:40Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
title |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
spellingShingle |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias Conde-Ocazionez, Sergio A. interhemispheric connectivity orientation selectivity binocular monocular anticipation |
title_short |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
title_full |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
title_fullStr |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
title_full_unstemmed |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
title_sort |
Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias |
author |
Conde-Ocazionez, Sergio A. |
author_facet |
Conde-Ocazionez, Sergio A. Jungen, Christiane Wunderle, Thomas Eriksson, David Maciel, Sergio Tulio Neuenschwander Schmidt, Kerstin Erika |
author_role |
author |
author2 |
Jungen, Christiane Wunderle, Thomas Eriksson, David Maciel, Sergio Tulio Neuenschwander Schmidt, Kerstin Erika |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Conde-Ocazionez, Sergio A. Jungen, Christiane Wunderle, Thomas Eriksson, David Maciel, Sergio Tulio Neuenschwander Schmidt, Kerstin Erika |
dc.subject.por.fl_str_mv |
interhemispheric connectivity orientation selectivity binocular monocular anticipation |
topic |
interhemispheric connectivity orientation selectivity binocular monocular anticipation |
description |
One leading hypothesis on the nature of visual callosal connections (CC) is that they replicate features of intrahemispheric lateral connections. However, CC act also in the central part of the binocular visual field. In agreement, early experiments in cats indicated that they provide the ipsilateral eye part of binocular receptive fields (RFs) at the vertical midline (Berlucchi and Rizzolatti, 1968), and play a key role in stereoscopic function. But until today callosal inputs to receptive fields activated by one or both eyes were never compared simultaneously, because callosal function has been often studied by cutting or lesioning either corpus callosum or optic chiasm not allowing such a comparison. To investigate the functional contribution of CC in the intact cat visual system we recorded both monocular and binocular neuronal spiking responses and receptive fields in the 17/18 transition zone during reversible deactivation of the contralateral hemisphere. Unexpectedly from many of the previous reports, we observe no change in ocular dominance during CC deactivation. Throughout the transition zone, a majority of RFs shrink, but several also increase in size. RFs are significantly more affected for ipsi- as opposed to contralateral stimulation, but changes are also observed with binocular stimulation. Noteworthy, RF shrinkages are tiny and not correlated to the profound decreases of monocular and binocular firing rates. They depend more on orientation and direction preference than on eccentricity or ocular dominance of the receiving neuron's RF. Our findings confirm that in binocularly viewing mammals, binocular RFs near the midline are constructed via the direct geniculo-cortical pathway. They also support the idea that input from the two eyes complement each other through CC: Rather than linking parts of RFs separated by the vertical meridian, CC convey a modulatory influence, reflecting the feature selectivity of lateral circuits, with a strong cardinal bias. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-04-26T16:42:20Z |
dc.date.available.fl_str_mv |
2018-04-26T16:42:20Z |
dc.date.issued.fl_str_mv |
2018-04-16 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
CONDE-OCAZIONEZ, S. A. et al. Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias. [s.l.], Front. Syst. Neurosci., v. 12, p. 11, abr./2018. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/25086 |
dc.identifier.doi.none.fl_str_mv |
10.3389/fnsys.2018.00011 |
identifier_str_mv |
CONDE-OCAZIONEZ, S. A. et al. Callosal influence on visual receptive fields has an ocular, an orientation-and direction bias. [s.l.], Front. Syst. Neurosci., v. 12, p. 11, abr./2018. 10.3389/fnsys.2018.00011 |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/25086 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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