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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Auteurs principaux:	Hugo Cousillas, Laurence Henry, Isabelle George, Schedir Marchesseau, Martine Hausberger
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2020
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/c601109263e041d9a313a811578c99f7
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id	oai: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
work_keys_str_mv	AT hugocousillas lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird AT laurencehenry lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird AT isabellegeorge lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird AT schedirmarchesseau lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird AT martinehausberger lateralizationofsocialsignalbrainprocessingcorrelateswiththedegreeofsocialintegrationinasongbird
_version_	1718377236181024768

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

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