自閉症スペクトラム障害の幼児における多次元機能的接続アーキテクチャの変化
Jiannan Kang1, Xiangyu Zhang1, Zongbing Xiao1
1College of Electronic & Information Engineering, Hebei University, Baoding 071002, China.
Brain sciences
|January 28, 2026
まとめ
自閉症スペクトラム障害(ASD)の子供たちは、脳の接続性の変化、ネットワークトポロジーの乱れ、および時間的ダイナミクスの異常を示しており、神経生理学の新しいバイオマーカーを示唆しています。
科学分野:
- 神経科学
- 発達心理学
- 生物物理学
背景:
- 自閉症スペクトラム障害(ASD)は、原因不明の神経発達障害です。
- 脳機能ネットワーク接続の変化は、ASDの臨床的特徴に関連しています。
- これらの異常の特定のパターンとメカニズムは、さらなる調査が必要です。
研究 の 目的:
- 自閉症スペクトラム障害(ASD)におけるネットワークトポロジーと動的遷移を調査すること。
- 周波数帯域全体にわたる静的および動的機能ネットワークを分析すること。
- ASDの子供における周波数間相互作用を探索すること。
主な方法:
- ASDの子供36名と健常対照(TD)の子供36名を募集しました。
- 安静時EEGデータを用いて、4つの周波数帯域(δ、θ、α、β)にわたる静的および動的低次および高次機能ネットワークを構築しました。
- グラフ理論的指標、状態エントロピー、および周波数間ネットワーク分析を適用しました。
主要な成果:
- ASDは、低次および高次のネットワーク全体で周波数帯域にわたる接続性の変化を示しました。
- ASDでは、α帯のトポロジーの乱れ(低いクラスタリング係数と効率、高い特性経路長)が顕著でした。
- 高次ネットワークは、時間的および周波数特異的な動的異常を示し、低次ネットワークではβ関連結合が増強され、高次ネットワークでは広範な減少が見られました。
結論:
- ASDの幼児は、低結合性と高結合性が共存し、ネットワークトポロジーが乱れ、時間的ダイナミクスが異常であることを示しています。
- 階層的、動的、および周波数間分析を統合することで、ASDの神経生理学に関する新しい洞察が得られます。
- これらの発見は、ASDの潜在的なバイオマーカーを示唆しています。
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