| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-05-25 |
| タイトル |
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タイトル |
Gamma and Theta/Alpha-Band Oscillations in the Electroencephalogram Distinguish the Content of Inner Speech |
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言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
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言語 |
en |
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キーワード |
auditory evoked potential |
| キーワード |
|
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言語 |
en |
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キーワード |
EEG |
| キーワード |
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言語 |
en |
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キーワード |
gamma |
| キーワード |
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言語 |
en |
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キーワード |
inner speech |
| キーワード |
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言語 |
en |
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キーワード |
N1 |
| キーワード |
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言語 |
en |
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キーワード |
prediction error |
| 資源タイプ |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
| 著者 |
Whitford, Thomas J.
Spencer, Kevin M.
Godwin, Marianthe
平野, 羊嗣
WEKO
35388
e-Rad_Researcher
90567497
| ja |
平野, 羊嗣
宮崎大学
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| ja-Kana |
ヒラノ, ヨウジ
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| en |
Hirano, Yoji
University of Miyazaki
|
Search repository
Chung, Lawrence Kin Hei
Vodovozov, Wadim
Griffiths, Oren
Harris, Anthony W.F.
| en |
Harris, Anthony W.F.
The Westmead Institute for Medical Research
|
Search repository
Le Pelley, Mike E.
Jack, Bradley N.
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Inner speech refers to the silent production of language in one’s mind. As a purely mental action without obvious physical manifestations, inner speech has been notoriously difficult to quantify. To address this issue, the present study repurposed the phenomenon of speaking-induced suppression, wherein overt speech has been consistently shown to elicit reduced auditory evoked potentials compared with externally generated speech, as well as changes in oscillatory activity in gamma and theta frequency bands. Given the functional similarities between inner and overt speech, we used an established experimental protocol to investigate whether similar metrics could be used to distinguish the content of inner speech. Healthy participants (n = 129) produced an inner syllable at a precisely specified time. An audible syllable was concurrently presented which either matched or mismatched the content of the inner syllable. The results revealed that Match and Mismatch conditions could be differentiated on the basis of their evoked oscillations in the gamma, theta, and alpha bands. Notably, there was a gamma-band oscillation in the vicinity of the P2 that differed between the Match and Mismatch conditions, suggesting that “late” gamma-band activity may index consciously perceived expectancy violations, or cognitive prediction errors. Regarding the auditory evoked potentials, the N1 component was suppressed in the Match condition while the P2 component was suppressed in the Mismatch condition, replicating previous findings. This study provides support for the existence of “inner speaking-induced suppression”, and demonstrates that inner syllables can be differentiated based on their influence on the electroencephalographic activity elicited by simultaneously-presented audible syllables. |
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言語 |
en |
| bibliographic_information |
en : eNeuro
巻 12,
号 2,
発行日 2025-02-01
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| 出版者 |
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出版者 |
Society for Neuroscience |
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言語 |
en |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
23732822 |
| item_10001_relation_14 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1523/ENEURO.0297-24.2025 |
| 権利 |
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権利情報 |
Copyright © 2025 Whitford et al. |
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言語 |
en |
| 出版タイプ |
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出版タイプ |
VoR |
fulltext (5.3 MB)
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