Lateralization of social signal brain processing correlates with the degree of social integration in a songbird

Abstract Group cohesion relies on the ability of its members to process social signals. Songbirds provide a unique model to investigate links between group functioning and brain processing of social acoustic signals. In the present study, we performed both behavioral observations of social relations...

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Autores principales: Hugo Cousillas, Laurence Henry, Isabelle George, Schedir Marchesseau, Martine Hausberger
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2020
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Acceso en línea:https://doaj.org/article/c601109263e041d9a313a811578c99f7
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spelling oai:doaj.org-article:c601109263e041d9a313a811578c99f72021-12-02T19:02:37ZLateralization of social signal brain processing correlates with the degree of social integration in a songbird10.1038/s41598-020-70946-72045-2322https://doaj.org/article/c601109263e041d9a313a811578c99f72020-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-70946-7https://doaj.org/toc/2045-2322Abstract Group cohesion relies on the ability of its members to process social signals. Songbirds provide a unique model to investigate links between group functioning and brain processing of social acoustic signals. In the present study, we performed both behavioral observations of social relationships within a group of starlings and individual electrophysiological recordings of HVC neuronal activity during the broadcast of either familiar or unfamiliar individual songs. This allowed us to evaluate and compare preferred partnerships and individual electrophysiological profiles. The electrophysiological results revealed asymmetric neuronal activity in the HVC and higher responsiveness to familiar than to unfamiliar songs. However, most importantly, we found a correlation between strength of cerebral asymmetry and social integration in the group: the more preferred partners a bird had, the more its HVC neuronal activity was lateralized. Laterality is likely to give advantages in terms of survival. Our results suggest that these include social skill advantages. Better knowledge of links between social integration and lateralization of social signal processing should help understand why and how lateralization has evolved.Hugo CousillasLaurence HenryIsabelle GeorgeSchedir MarchesseauMartine HausbergerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Hugo Cousillas
Laurence Henry
Isabelle George
Schedir Marchesseau
Martine Hausberger
Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
description Abstract Group cohesion relies on the ability of its members to process social signals. Songbirds provide a unique model to investigate links between group functioning and brain processing of social acoustic signals. In the present study, we performed both behavioral observations of social relationships within a group of starlings and individual electrophysiological recordings of HVC neuronal activity during the broadcast of either familiar or unfamiliar individual songs. This allowed us to evaluate and compare preferred partnerships and individual electrophysiological profiles. The electrophysiological results revealed asymmetric neuronal activity in the HVC and higher responsiveness to familiar than to unfamiliar songs. However, most importantly, we found a correlation between strength of cerebral asymmetry and social integration in the group: the more preferred partners a bird had, the more its HVC neuronal activity was lateralized. Laterality is likely to give advantages in terms of survival. Our results suggest that these include social skill advantages. Better knowledge of links between social integration and lateralization of social signal processing should help understand why and how lateralization has evolved.
format article
author Hugo Cousillas
Laurence Henry
Isabelle George
Schedir Marchesseau
Martine Hausberger
author_facet Hugo Cousillas
Laurence Henry
Isabelle George
Schedir Marchesseau
Martine Hausberger
author_sort Hugo Cousillas
title Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
title_short Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
title_full Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
title_fullStr Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
title_full_unstemmed Lateralization of social signal brain processing correlates with the degree of social integration in a songbird
title_sort lateralization of social signal brain processing correlates with the degree of social integration in a songbird
publisher Nature Portfolio
publishDate 2020
url https://doaj.org/article/c601109263e041d9a313a811578c99f7
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AT isabellegeorge lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird
AT schedirmarchesseau lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird
AT martinehausberger lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird
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