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02984nam a2200661Ia 4500 |
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10.1016-j.cortex.2021.03.018 |
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220427s2021 CNT 000 0 und d |
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|a 00109452 (ISSN)
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|a Intracranial EEG evidence of functional specialization for taxonomic and thematic relations
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|b Masson SpA
|c 2021
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|z View Fulltext in Publisher
|u https://doi.org/10.1016/j.cortex.2021.03.018
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|a The dual-hub account posits that the neural organization of semantic knowledge is segregated by the type of semantic relation with anterior temporal lobe (ATL) specializing for taxonomic relations and inferior parietal lobule (IPL) for thematic relations. This study critically examined this account by recording intracranial EEG from an array of depth electrodes within ATL, IPL, and two regions within the semantic control network, inferior frontal gyrus (IFG) and posterior middle temporal gyrus (pMTG), while 17 participants with refractory epilepsy completed a semantic relatedness judgment task. We observed a significant difference between relation types in ATL and IPL approximately 600–800 ms after trial presentation, and no significant differences in IFG or pMTG. Within this time window, alpha and theta suppression indexing cognitive effort and memory retrieval was observed in ATL for taxonomic trials and in IPL for thematic trials. These results suggest taxonomic specialization in ATL and thematic specialization in IPL, consistent with the dual-hub account of semantic cognition. © 2021 Elsevier Ltd
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|a adult
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|a alpha rhythm
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|a anterior temporal lobe
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|a Article
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|a brain mapping
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|a Brain Mapping
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|a clinical article
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|a cognition
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|a controlled study
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|a decision making
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|a drug resistant epilepsy
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|a electrocorticography
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|a Electrocorticography
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|a electroencephalography
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|a electroencephalography monitoring
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|a female
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|a gamma rhythm
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|a human
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|a Humans
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|a inferior frontal gyrus
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|a inferior parietal lobule
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|a information retrieval
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|a Intracranial EEG
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|a Magnetic Resonance Imaging
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|a male
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|a memory
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|a middle temporal gyrus
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|a nuclear magnetic resonance imaging
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|a parietal lobe
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|a Parietal Lobe
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|a reaction time
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|a Semantic cognition
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|a semantics
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|a semantics
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|a Semantics
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|a Taxonomic
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|a temporal lobe
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|a temporal lobe
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|a Temporal Lobe
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|a Thematic
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|a theta rhythm
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|a Geller, J.
|e author
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|a Mirman, D.
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|a Szaflarski, J.P.
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|a Thye, M.
|e author
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|t Cortex
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