自閉症のリスクが高い乳児とそうでない乳児における偶発性パラダイム中の行動の違い
Marcelo R Rosales1, José Carlos Pulido2, John Sideris3
1College of Health and Rehabilitation Sciences, The Ohio State University, Columbus, Ohio, United States of America.
PloS one
|January 23, 2026
まとめ
自閉症のリスクが高い乳児(HLA)とリスクが低い乳児(LLA)は同様の学習行動を示した。しかし、HLA群の一部の乳児は独自の視覚運動パターンを示し、早期の自閉症の発生における不均一性の可能性を示唆した。
科学分野:
- 発達神経科学; 自閉症スペクトラム障害研究; 乳児運動発達
背景:
- 自閉症スペクトラム障害(ASD)と診断された乳児では、運動障害が観察されている。; 自閉症のリスクが高い(HLA)乳児とリスクが低い(LLA)乳児の運動行動を比較した研究は限られている。
研究 の 目的:
- 偶発性学習課題中に、HLAおよびLLAの乳児における行動の違いを特定し、記述すること。; 自閉症のリスクの指標となりうる早期の運動および視線行動を調査すること。
主な方法:
- 30人の乳児(6〜9ヶ月)をHLA群とLLA群(各n=15)に分類した。; 偶発性学習パラダイムでは、乳児の脚の動きがロボットを起動させた。; 視線行動、ロボットの起動、学習を評価し、群間で比較した。
主要な成果:
- 全体的な注視時間、予測的な注視、ロボットの起動において、有意な群間差は認められなかった。; HLA群の4人の乳児は、質的に異なる視覚運動パターンを示した。; 行動測定に基づくと、HLA乳児とLLA乳児の早期学習は同様であった。
結論:
- 自閉症のリスクが高い乳児と低い乳児は、偶発性学習において同等の行動を利用する。; リスクが高い乳児群内には不均一性が存在し、さらなる調査が必要である。; この課題では、早期の運動および視線行動はHLA乳児とLLA乳児を区別しない可能性があるが、微妙な違いはより詳細な検討に値する。
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