失語症における時間処理効果の安定性
Matthew J Sayers1, Robert W Wiley2, Jessica Obermeyer3
1Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL.
Journal of speech, language, and hearing research : JSLHR
|January 30, 2026
まとめ
失語症の時間処理は安定しており、効果はタスクと遅延によって異なる。この研究は、応答遅延が失語症者(PWA)と健常対照者の精度にどのように影響するかを明らかにする。
科学分野:
- 神経科学
- 心理言語学
- 言語聴覚療法
背景:
- 失語症の言語障害は、語彙活性化における時間処理の混乱と関連している。
- インタラクティブ活性化モデルは、伝達と維持を時間処理の重要な要素として特定している。
- 言語課題における応答遅延は、失語症者(PWA)の時間処理障害を明らかにする。
研究 の 目的:
- 失語症者(PWA)および神経典型対照者における時間処理効果の安定性を調査する。
- 応答遅延による精度の変化が安定した効果であるか、ランダムなパフォーマンスの変動であるかを判断する。
- 言語課題のパフォーマンスに対する応答間隔の変化の影響を評価する。
主な方法:
- 8人の失語症者と10人の対照者から命名および復唱データを収集した。
- 1秒、5秒、10秒の応答遅延を伴う課題を実施した。
- 複数の時点およびセッションにわたる精度と時間効果の安定性を分析するために、ロジスティック混合効果モデルを使用した。
主要な成果:
- ほとんどの失語症者および対照者において、時間処理効果は複数日にわたって安定していることが見出された。
- 失語症者では12のうち11の時間処理効果が安定し、対照者では8のうち6が安定した。
- パフォーマンスパターンは、時間処理効果、タスクタイプ、および応答間隔期間との相互作用を示した。
結論:
- 失語症の時間処理障害は、時間とともに安定性を示す。
- 応答遅延は、失語症者および対照者の言語課題の精度に一貫して影響を与える。
- 本研究結果は、典型的および障害のある言語処理における語彙活性化の時間的ダイナミクスを理解することに貢献する。
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