Advanced feedback enhances sensorimotor adaptation

被引:1
|
作者
Wang, Tianhe [1 ,2 ]
Avraham, Guy [1 ,2 ]
Tsay, Jonathan S. [1 ,2 ]
Thummala, Tanvi [3 ]
Ivry, Richard B. [1 ,2 ]
机构
[1] Univ Calif Berkeley, Dept Psychol, 2121 Berkeley Way, Berkeley, CA 94704 USA
[2] Univ Calif Berkeley, Helen Wills Neurosci Inst, Li Ka Shing Ctr, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Mol & Cell Biol, Weill Hall 3200, Berkeley, CA 94720 USA
关键词
NICTITATING-MEMBRANE RESPONSE; VISUAL FEEDBACK; PRISM ADAPTATION; IMPLICIT; EXPLICIT; FEEDFORWARD; ONLINE; RABBIT; ERROR; DELAY;
D O I
10.1016/j.cub.2024.01.073
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
It is widely recognized that sensorimotor adaptation is facilitated when feedback is provided throughout the movement compared with when it is provided at the end of the movement. However, the source of this advantage is unclear: continuous feedback is more ecological, dynamic, and available earlier than endpoint feedback. Here, we assess the relative merits of these factors using a method that allows us to manipulate feedback timing independent of actual hand position. By manipulating the onset time of "endpoint"feedback, we found that adaptation was modulated in a non -monotonic manner, with the peak of the function occurring in advance of the hand reaching the target. Moreover, at this optimal time, learning was of similar magnitude as that observed with continuous feedback. By varying movement duration, we demonstrate that this optimal time occurs at a relatively fixed time after movement onset, an interval we hypothesize corresponds to when the comparison of the sensory prediction and feedback generates the strongest error signal.
引用
收藏
页数:16
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