Different types of laughter modulate connectivity within distinct parts of the laughter perception network.

Laughter is an ancient signal of social communication among humans and non-human primates. Laughter types with complex social functions (e.g., taunt and joy) presumably evolved from the unequivocal and reflex-like social bonding signal of tickling laughter already present in non-human primates. Here...

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Autores principales: Dirk Wildgruber, Diana P Szameitat, Thomas Ethofer, Carolin Brück, Kai Alter, Wolfgang Grodd, Benjamin Kreifelts
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Publicado: Public Library of Science (PLoS) 2013
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Acceso en línea:https://doaj.org/article/3ab06617699d41ae9014b2a7959d9709
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spelling oai:doaj.org-article:3ab06617699d41ae9014b2a7959d97092021-11-18T07:46:19ZDifferent types of laughter modulate connectivity within distinct parts of the laughter perception network.1932-620310.1371/journal.pone.0063441https://doaj.org/article/3ab06617699d41ae9014b2a7959d97092013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23667619/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Laughter is an ancient signal of social communication among humans and non-human primates. Laughter types with complex social functions (e.g., taunt and joy) presumably evolved from the unequivocal and reflex-like social bonding signal of tickling laughter already present in non-human primates. Here, we investigated the modulations of cerebral connectivity associated with different laughter types as well as the effects of attention shifts between implicit and explicit processing of social information conveyed by laughter using functional magnetic resonance imaging (fMRI). Complex social laughter types and tickling laughter were found to modulate connectivity in two distinguishable but partially overlapping parts of the laughter perception network irrespective of task instructions. Connectivity changes, presumably related to the higher acoustic complexity of tickling laughter, occurred between areas in the prefrontal cortex and the auditory association cortex, potentially reflecting higher demands on acoustic analysis associated with increased information load on auditory attention, working memory, evaluation and response selection processes. In contrast, the higher degree of socio-relational information in complex social laughter types was linked to increases of connectivity between auditory association cortices, the right dorsolateral prefrontal cortex and brain areas associated with mentalizing as well as areas in the visual associative cortex. These modulations might reflect automatic analysis of acoustic features, attention direction to informative aspects of the laughter signal and the retention of those in working memory during evaluation processes. These processes may be associated with visual imagery supporting the formation of inferences on the intentions of our social counterparts. Here, the right dorsolateral precentral cortex appears as a network node potentially linking the functions of auditory and visual associative sensory cortices with those of the mentalizing-associated anterior mediofrontal cortex during the decoding of social information in laughter.Dirk WildgruberDiana P SzameitatThomas EthoferCarolin BrückKai AlterWolfgang GroddBenjamin KreifeltsPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 5, p e63441 (2013)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Dirk Wildgruber
Diana P Szameitat
Thomas Ethofer
Carolin Brück
Kai Alter
Wolfgang Grodd
Benjamin Kreifelts
Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
description Laughter is an ancient signal of social communication among humans and non-human primates. Laughter types with complex social functions (e.g., taunt and joy) presumably evolved from the unequivocal and reflex-like social bonding signal of tickling laughter already present in non-human primates. Here, we investigated the modulations of cerebral connectivity associated with different laughter types as well as the effects of attention shifts between implicit and explicit processing of social information conveyed by laughter using functional magnetic resonance imaging (fMRI). Complex social laughter types and tickling laughter were found to modulate connectivity in two distinguishable but partially overlapping parts of the laughter perception network irrespective of task instructions. Connectivity changes, presumably related to the higher acoustic complexity of tickling laughter, occurred between areas in the prefrontal cortex and the auditory association cortex, potentially reflecting higher demands on acoustic analysis associated with increased information load on auditory attention, working memory, evaluation and response selection processes. In contrast, the higher degree of socio-relational information in complex social laughter types was linked to increases of connectivity between auditory association cortices, the right dorsolateral prefrontal cortex and brain areas associated with mentalizing as well as areas in the visual associative cortex. These modulations might reflect automatic analysis of acoustic features, attention direction to informative aspects of the laughter signal and the retention of those in working memory during evaluation processes. These processes may be associated with visual imagery supporting the formation of inferences on the intentions of our social counterparts. Here, the right dorsolateral precentral cortex appears as a network node potentially linking the functions of auditory and visual associative sensory cortices with those of the mentalizing-associated anterior mediofrontal cortex during the decoding of social information in laughter.
format article
author Dirk Wildgruber
Diana P Szameitat
Thomas Ethofer
Carolin Brück
Kai Alter
Wolfgang Grodd
Benjamin Kreifelts
author_facet Dirk Wildgruber
Diana P Szameitat
Thomas Ethofer
Carolin Brück
Kai Alter
Wolfgang Grodd
Benjamin Kreifelts
author_sort Dirk Wildgruber
title Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
title_short Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
title_full Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
title_fullStr Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
title_full_unstemmed Different types of laughter modulate connectivity within distinct parts of the laughter perception network.
title_sort different types of laughter modulate connectivity within distinct parts of the laughter perception network.
publisher Public Library of Science (PLoS)
publishDate 2013
url https://doaj.org/article/3ab06617699d41ae9014b2a7959d9709
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