機能的脳活動と間欠的律動性デルタ/シータ活動:トランス診断的脳波・機能的磁気共鳴画像法安静時研究
Bernd Feige1, Katharina von Zedtwitz1, Isabelle Matteit1
1Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Biological psychiatry global open science
|February 3, 2026
まとめ
脳波における間欠的律動性デルタ/シータ活動(IRDA/IRTA)は、神経精神疾患における脳の変化と関連している。本研究では、自己免疫性精神症候群(APS)および境界性パーソナリティ障害(BPD)におけるこれらの脳領域をマッピングするためにEEG-fMRIを使用した。
科学分野:
- 神経科学
- 精神医学
- 医用画像処理
背景:
- 脳波(EEG)で検出される間欠的律動性デルタ/シータ活動(IRDA/IRTA)は、神経精神疾患の病態生理に関連している。
- EEGと機能的磁気共鳴画像法(fMRI)を組み合わせたアプローチは、これらの状態における脳機能を調査する上で価値がある。
研究 の 目的:
- 脳波・機能的磁気共鳴画像法(EEG-fMRI)を組み合わせたアプローチを用いて、IRDA/IRTAと機能的に相関する脳領域を特徴づける。
- 自己免疫性精神症候群(APS)および境界性パーソナリティ障害(BPD)の疑いのある患者、ならびに健常対照群(HC)を含むトランス診断群におけるこれらの相関を調査する。
主な方法:
- APS患者33名、BPD患者59名、健常対照者43名のEEG-fMRIデータセット135件を利用した。
- 超高速MR脳波検査とAFNIソフトウェアをfMRI解析に使用した。
- 独立成分分析とアルゴリズム検出を適用して、アーチファクトからIRDA/IRTAイベントを分離した。
主要な成果:
- 全群にわたるIRDA/IRTAと相関する11のコンセンサス脳領域を同定し、5領域で活動増加、6領域で活動減少が認められた。APS群では、活動減少を示す追加の5クラスターが認められた。BPD群では、活動増加を示す追加の1クラスターが認められた。
結論:
- IRDA/IRTAは、サリエンスネットワークに類似した前頭部-中心部-側頭部の領域における脳活動の変化と関連している。
- APSおよびBPD患者において、IRDA/IRTAに関連する疾患特異的な脳活動の変化が同定された。
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