Different hemispheric roles in recognition of happy expressions.

The emotional expression of the face provides an important social signal that allows humans to make inferences about other people's state of mind. However, the underlying brain mechanisms are complex and still not completely understood. Using magnetoencephalography (MEG), we analyzed the spatio...

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Autores principales:	Akinori Nakamura, Burkhard Maess, Thomas R Knösche, Angela D Friederici
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ff5dbd3199894384a72699252670082d
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spelling	oai:doaj.org-article:ff5dbd3199894384a72699252670082d2021-11-18T08:33:06ZDifferent hemispheric roles in recognition of happy expressions.1932-620310.1371/journal.pone.0088628https://doaj.org/article/ff5dbd3199894384a72699252670082d2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24520407/?tool=EBIhttps://doaj.org/toc/1932-6203The emotional expression of the face provides an important social signal that allows humans to make inferences about other people's state of mind. However, the underlying brain mechanisms are complex and still not completely understood. Using magnetoencephalography (MEG), we analyzed the spatiotemporal structure of regional electrical brain activity in human adults during a categorization task (faces or hands) and an emotion discrimination task (happy faces or neutral faces). Brain regions that are specifically important for different aspects of processing emotional facial expressions showed interesting hemispheric dominance patterns. The dorsal brain regions showed a right predominance when participants paid attention to facial expressions: The right parietofrontal regions, including the somatosensory, motor/premotor, and inferior frontal cortices showed significantly increased activation in the emotion discrimination task, compared to in the categorization task, in latencies of 350 to 550 ms, while no activation was found in their left hemispheric counterparts. Furthermore, a left predominance of the ventral brain regions was shown for happy faces, compared to neutral faces, in latencies of 350 to 550 ms within the emotion discrimination task. Thus, the present data suggest that the right and left hemispheres play different roles in the recognition of facial expressions depending on cognitive context.Akinori NakamuraBurkhard MaessThomas R KnöscheAngela D FriedericiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e88628 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Akinori Nakamura Burkhard Maess Thomas R Knösche Angela D Friederici Different hemispheric roles in recognition of happy expressions.
description	The emotional expression of the face provides an important social signal that allows humans to make inferences about other people's state of mind. However, the underlying brain mechanisms are complex and still not completely understood. Using magnetoencephalography (MEG), we analyzed the spatiotemporal structure of regional electrical brain activity in human adults during a categorization task (faces or hands) and an emotion discrimination task (happy faces or neutral faces). Brain regions that are specifically important for different aspects of processing emotional facial expressions showed interesting hemispheric dominance patterns. The dorsal brain regions showed a right predominance when participants paid attention to facial expressions: The right parietofrontal regions, including the somatosensory, motor/premotor, and inferior frontal cortices showed significantly increased activation in the emotion discrimination task, compared to in the categorization task, in latencies of 350 to 550 ms, while no activation was found in their left hemispheric counterparts. Furthermore, a left predominance of the ventral brain regions was shown for happy faces, compared to neutral faces, in latencies of 350 to 550 ms within the emotion discrimination task. Thus, the present data suggest that the right and left hemispheres play different roles in the recognition of facial expressions depending on cognitive context.
format	article
author	Akinori Nakamura Burkhard Maess Thomas R Knösche Angela D Friederici
author_facet	Akinori Nakamura Burkhard Maess Thomas R Knösche Angela D Friederici
author_sort	Akinori Nakamura
title	Different hemispheric roles in recognition of happy expressions.
title_short	Different hemispheric roles in recognition of happy expressions.
title_full	Different hemispheric roles in recognition of happy expressions.
title_fullStr	Different hemispheric roles in recognition of happy expressions.
title_full_unstemmed	Different hemispheric roles in recognition of happy expressions.
title_sort	different hemispheric roles in recognition of happy expressions.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/ff5dbd3199894384a72699252670082d
work_keys_str_mv	AT akinorinakamura differenthemisphericrolesinrecognitionofhappyexpressions AT burkhardmaess differenthemisphericrolesinrecognitionofhappyexpressions AT thomasrknosche differenthemisphericrolesinrecognitionofhappyexpressions AT angeladfriederici differenthemisphericrolesinrecognitionofhappyexpressions
_version_	1718421661001187328

Different hemispheric roles in recognition of happy expressions.

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