Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information

Abstract Semantic categorization is a fundamental ability in language as well as in interaction with the environment. However, it is unclear what cognitive and neural basis generates this flexible and context dependent categorization of semantic information. We performed behavioral and fMRI experime...

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Autores principales:	Atsushi Matsumoto, Takahiro Soshi, Norio Fujimaki, Aya S. Ihara
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/925099a489114604b88e5ae1c321493b
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spelling	oai:doaj.org-article:925099a489114604b88e5ae1c321493b2021-12-02T16:06:10ZDistinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information10.1038/s41598-021-92726-72045-2322https://doaj.org/article/925099a489114604b88e5ae1c321493b2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92726-7https://doaj.org/toc/2045-2322Abstract Semantic categorization is a fundamental ability in language as well as in interaction with the environment. However, it is unclear what cognitive and neural basis generates this flexible and context dependent categorization of semantic information. We performed behavioral and fMRI experiments with a semantic priming paradigm to clarify this. Participants conducted semantic decision tasks in which a prime word preceded target words, using names of animals (mammals, birds, or fish). We focused on the categorization of unique marine mammals, having characteristics of both mammals and fish. Behavioral experiments indicated that marine mammals were semantically closer to fish than terrestrial mammals, inconsistent with the category membership. The fMRI results showed that the left anterior temporal lobe was sensitive to the semantic distance between prime and target words rather than category membership, while the left ventrolateral prefrontal cortex was sensitive to the consistency of category membership of word pairs. We interpreted these results as evidence of existence of dual processes for semantic categorization. The combination of bottom-up processing based on semantic characteristics in the left anterior temporal lobe and top-down processing based on task and/or context specific information in the left ventrolateral prefrontal cortex is required for the flexible categorization of semantic information.Atsushi MatsumotoTakahiro SoshiNorio FujimakiAya S. IharaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Atsushi Matsumoto Takahiro Soshi Norio Fujimaki Aya S. Ihara Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
description	Abstract Semantic categorization is a fundamental ability in language as well as in interaction with the environment. However, it is unclear what cognitive and neural basis generates this flexible and context dependent categorization of semantic information. We performed behavioral and fMRI experiments with a semantic priming paradigm to clarify this. Participants conducted semantic decision tasks in which a prime word preceded target words, using names of animals (mammals, birds, or fish). We focused on the categorization of unique marine mammals, having characteristics of both mammals and fish. Behavioral experiments indicated that marine mammals were semantically closer to fish than terrestrial mammals, inconsistent with the category membership. The fMRI results showed that the left anterior temporal lobe was sensitive to the semantic distance between prime and target words rather than category membership, while the left ventrolateral prefrontal cortex was sensitive to the consistency of category membership of word pairs. We interpreted these results as evidence of existence of dual processes for semantic categorization. The combination of bottom-up processing based on semantic characteristics in the left anterior temporal lobe and top-down processing based on task and/or context specific information in the left ventrolateral prefrontal cortex is required for the flexible categorization of semantic information.
format	article
author	Atsushi Matsumoto Takahiro Soshi Norio Fujimaki Aya S. Ihara
author_facet	Atsushi Matsumoto Takahiro Soshi Norio Fujimaki Aya S. Ihara
author_sort	Atsushi Matsumoto
title	Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
title_short	Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
title_full	Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
title_fullStr	Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
title_full_unstemmed	Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
title_sort	distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/925099a489114604b88e5ae1c321493b
work_keys_str_mv	AT atsushimatsumoto distinctiveresponsesinanteriortemporallobeandventrolateralprefrontalcortexduringcategorizationofsemanticinformation AT takahirososhi distinctiveresponsesinanteriortemporallobeandventrolateralprefrontalcortexduringcategorizationofsemanticinformation AT noriofujimaki distinctiveresponsesinanteriortemporallobeandventrolateralprefrontalcortexduringcategorizationofsemanticinformation AT ayasihara distinctiveresponsesinanteriortemporallobeandventrolateralprefrontalcortexduringcategorizationofsemanticinformation
_version_	1718385101862076416

Distinctive responses in anterior temporal lobe and ventrolateral prefrontal cortex during categorization of semantic information

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