When one hemisphere takes control: metacontrol in pigeons (Columba livia).

<h4>Background</h4>Vertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ruth Adam, Onur Güntürkün
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e646f3a960bf442b95aa33aba2de3cb4
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e646f3a960bf442b95aa33aba2de3cb4
record_format	dspace
spelling	oai:doaj.org-article:e646f3a960bf442b95aa33aba2de3cb42021-11-25T06:23:05ZWhen one hemisphere takes control: metacontrol in pigeons (Columba livia).1932-620310.1371/journal.pone.0005307https://doaj.org/article/e646f3a960bf442b95aa33aba2de3cb42009-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19390578/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Vertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere takes charge of the response selection--a process known as metacontrol. Thus far, this phenomenon has only been shown in a handful of studies with primates, mostly conducted in humans. Metacontrol, however, is even more relevant for animals like birds with laterally placed eyes and complete chiasmatic decussation since visual input to the hemispheres is largely different.<h4>Methodology/principal findings</h4>Homing pigeons (Columba livia) were trained with a color discrimination task. Each hemisphere was trained with a different color pair and therefore had a different experience. Subsequently, the pigeons were binocularly examined with two additional stimuli that combined the positive color of one hemisphere with a negative color that had been shown to the other, omitting the availability of a coherent solution and confronting the pigeons with a conflicting situation. Some of the pigeons responded to both stimuli, indicating that none of the hemispheres dominated the overall preference. Some birds, however, responded primarily to one of the conflicting stimuli, showing that they based their choice on the left- or right-monocularly learned color pair, indicating hemispheric metacontrol.<h4>Conclusions/significance</h4>We could demonstrate for the first time that metacontrol is a widespread phenomenon that also exists in birds, and thus in principle requires no corpus callosum. Our results are closely similar to those in humans: monocular performance was higher than binocular one and animals displayed different modes of hemispheric dominance. Thus, metacontrol is a dynamic and widely distributed process that possibly constitutes a requirement for all animals with a bipartite brain to confront the problem of choosing between two hemisphere-bound behavioral options.Ruth AdamOnur GüntürkünPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 4, p e5307 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ruth Adam Onur Güntürkün When one hemisphere takes control: metacontrol in pigeons (Columba livia).
description	<h4>Background</h4>Vertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere takes charge of the response selection--a process known as metacontrol. Thus far, this phenomenon has only been shown in a handful of studies with primates, mostly conducted in humans. Metacontrol, however, is even more relevant for animals like birds with laterally placed eyes and complete chiasmatic decussation since visual input to the hemispheres is largely different.<h4>Methodology/principal findings</h4>Homing pigeons (Columba livia) were trained with a color discrimination task. Each hemisphere was trained with a different color pair and therefore had a different experience. Subsequently, the pigeons were binocularly examined with two additional stimuli that combined the positive color of one hemisphere with a negative color that had been shown to the other, omitting the availability of a coherent solution and confronting the pigeons with a conflicting situation. Some of the pigeons responded to both stimuli, indicating that none of the hemispheres dominated the overall preference. Some birds, however, responded primarily to one of the conflicting stimuli, showing that they based their choice on the left- or right-monocularly learned color pair, indicating hemispheric metacontrol.<h4>Conclusions/significance</h4>We could demonstrate for the first time that metacontrol is a widespread phenomenon that also exists in birds, and thus in principle requires no corpus callosum. Our results are closely similar to those in humans: monocular performance was higher than binocular one and animals displayed different modes of hemispheric dominance. Thus, metacontrol is a dynamic and widely distributed process that possibly constitutes a requirement for all animals with a bipartite brain to confront the problem of choosing between two hemisphere-bound behavioral options.
format	article
author	Ruth Adam Onur Güntürkün
author_facet	Ruth Adam Onur Güntürkün
author_sort	Ruth Adam
title	When one hemisphere takes control: metacontrol in pigeons (Columba livia).
title_short	When one hemisphere takes control: metacontrol in pigeons (Columba livia).
title_full	When one hemisphere takes control: metacontrol in pigeons (Columba livia).
title_fullStr	When one hemisphere takes control: metacontrol in pigeons (Columba livia).
title_full_unstemmed	When one hemisphere takes control: metacontrol in pigeons (Columba livia).
title_sort	when one hemisphere takes control: metacontrol in pigeons (columba livia).
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/e646f3a960bf442b95aa33aba2de3cb4
work_keys_str_mv	AT ruthadam whenonehemispheretakescontrolmetacontrolinpigeonscolumbalivia AT onurgunturkun whenonehemispheretakescontrolmetacontrolinpigeonscolumbalivia
_version_	1718413834505420800

When one hemisphere takes control: metacontrol in pigeons (Columba livia).

Ejemplares similares