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2023 Fiscal Year Final Research Report

Cross frequency coupling on EEG in schizophrenia

Research Project

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Project/Area Number 21K07482
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52030:Psychiatry-related
Research InstitutionKyushu University

Principal Investigator

Hirano Shogo  九州大学, 大学病院, 助教 (10568984)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywords統合失調症 / 脳波 / 周波数間カップリング / 聴性定常反応
Outline of Final Research Achievements

We evaluated resting state and 40Hz auditory steady state response (ASSR) with EEG in 61 patients with schizophrenia (SZ) and 62 healthy control subjects (HC). SZ showed decreased phase locking factor (PLF) on ASSR condition compared to HC. Regarding cross-frequency coupling, firstly, SZ showed decreased phase amplitude coupling (PAC) between 3-7Hz phase and 57-100Hz amplitude. Secondly, SZ showed decreased amplitude amplitude coupling (AAC) between 3-9Hz amplitude and 30-100Hz amplitude.

Free Research Field

精神医学

Academic Significance and Societal Importance of the Research Achievements

これまでに統合失調症患者を対象として周波数カップリングを検討した研究そのものが少ないが、我々の知る限りでは統合失調症患者において位相振幅間カップリングの異常を指摘したものはない。本研究は世界で初めて、比較的多い被験者数にて統合失調症患者における位相振幅間カップリングおよび振幅振幅間カップリングの異常を見出した。

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Published: 2025-01-30  

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