身体信号処理の障害は境界性パーソナリティ特性と関連している：予測符号化モデルからの洞察
1Institute of Applied Psychology, College of Education, Zhejiang University of Technology, Hangzhou, China.
まとめ
境界性パーソナリティ障害（BPD）特性を持つ個人は、内受容の精度は保たれているものの、身体信号への信頼が低下している。これは、感情調節に影響を与える可能性のある、内受容に関連する神経処理の変化を示唆している。
科学分野:
- 心理学
- 神経科学
- 精神医学
背景:
- 境界性パーソナリティ障害（BPD）は、感情不安定性とネガティブな感情を特徴とする。
- 予測符号化モデルは、身体信号の予測障害がBPDの欠陥の根底にある可能性を示唆している。
- BPDにおける予測符号化モデルの実証的検証は限られている。
主な方法:
- McLeanスクリーニングインスツルメントに基づき、高（スコア≥6）および低（スコア≤2）BPD特性群を募集した。
- 内受容感度は、多次元内受容意識評価-2（MAIA-2）を用いて評価した。
- 心拍数カウントタスク（HBCT）による内受容精度と、心拍誘発電位（HEP）を用いた神経相関を測定した。
結論:
- 高BPD特性を持つ個人は、内受容精度は保たれているものの、心臓信号に対する信頼が低下し、神経処理（HEP）が変化していることを示す。
- 本研究結果は予測符号化モデルを支持し、剛直な精度重み付けがBPD特性における適応的な内受容変調を損なう可能性を示唆している。
- 内受容処理の変化は、境界性パーソナリティ障害で見られる感情不安定性に寄与する可能性がある。
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