Adaptation to motor-visual and motor-auditory temporal lags transfer across modalities

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• 作者：Yoshimori Sugano ; Mirjam Keetels and Jean Vroomen
• 关键词：Adaptation ; Temporal recalibration ; Voluntary action ; Vision ; Audition ; Temporal order judgment
• 刊名：Experimental Brain Research
• 出版年：2010
• 出版时间：March, 2010
• 年：2010
• 卷：201
• 期：3
• 页码：393-399
• 全文大小：278.7 KB

文摘

Previous research has shown that the timing of a sensor-motor event is recalibrated after a brief exposure to a delayed feedback of a voluntary action (Stetson et al. 2006). Here, we examined whether it is the sensory or motor event that is shifted in time. We compared lag adaption for action-feedback in visuo-motor pairs and audio-motor pairs using an adaptation-test paradigm. Participants were exposed to a constant lag (50 or 150 ms) between their voluntary action (finger tap) and its sensory feedback (flash or tone pip) during an adaptation period (~3 min). Immediately after that, they performed a temporal order judgment (TOJ) task about the tap-feedback test stimulus pairings. The modality of the feedback stimulus was either the same as the adapted one (within-modal) or different (cross-modal). The results showed that the point of subjective simultaneity (PSS) was uniformly shifted in the direction of the exposed lag within and across modalities (motor-visual, motor-auditory). This suggests that the TRE of sensor-motor events is mainly caused by a shift in the motor component.