発話行動および同時性判断にみられるDAF順応による時間的再較正

摘要

Recent studies of speech mechanism have suggested the existence of a common representation which affects both speech production and perception. It is well known that 'Delayed Auditory Feedback' (DAF) manipulation modulates speech behavior, although most of such speech studies employ tone modulation to feedback of speaker's voice. In the present study, we investigated a common speech representation between speech behavior and perception, by using 'lag adaptation' procedure to DAF in continuous speech. The experiments demonstrated recalibration mechanism which affects both speech production and perception in temporal aspect, suggesting that there may be a common representation shared by both production and perception of speech.%発話に関する最近の研究から，発話行動と知覚に共通した表象が示唆されてきた．このような研究でrnは聴覚フィードバックに変調を加える手法が一般的であったが，フィードバックの遅延換作（DAF）もまた発話を変化させることが知られている，本研究では継続的発話におけるDAFを用いた時差順応手続きにより行動と知覚に共通する発話表象を検討し，時間的側面においてもその双方に再較正メカニズムが影響する可能性を示唆した．