視覚刺激と聴覚刺激を用いた反応時間課題の臨床応用—適用事例の実験結果と生活状況との関連

Clinical applications of reaction time tasks using visual and auditory stimuli: The relationship between task results and daily life for a stroke patient

要旨：本研究の目的は，視覚刺激と聴覚刺激を用いた3つの反応時間課題の臨床での有用性を明らかにすることである．脳梗塞を発症した症例に，発症14週から56週までの期間，継時的に反応時間課題を実施し生活状況との関連を比較した．反応時間課題では，視-聴覚課題の反応時間の中央値が著しく遅延している週が24週のうち8つの週で認められ，同時に階段昇降の能力が低下していた．反応時間課題は活動遂行時の情報処理上の問題を反映し，臨床で有用な評価であることが示された．

　The purpose of this study is to reveal the usefulness of three choice reaction time tasks for clinical evaluation. We continuously conducted the reaction time tasks for one stoke patient from the 14th week after the onset of symptoms until the 56th week and analyzed the relationship between the results of the tasks and Activities of Daily Living (ADL). The medians of visual-auditory stimuli discrimination task were remarkably larger than other tasks at 8 weeks compared to those at 24 weeks, indicating an impairment of the ADL of going up and downstairs. The results show that the reaction time tasks may reflect impaired information processing during ADL and might be a useful evaluation tool.