Attribution of sensory prediction error to perception of muscle fatigue

被引:3
作者
Ito, Sho [1 ,2 ]
Kimura, Toshitaka [1 ]
Gomi, Hiroaki [1 ]
机构
[1] NTT Corp, NTT Commun Sci Labs, Atsugi, Kanagawa, Japan
[2] Tokyo Inst Technol, Sch Engn, Yokohama, Kanagawa, Japan
基金
日本学术振兴会;
关键词
MYOELECTRIC SIGNAL; INTERNAL-MODEL; MOTOR; ADAPTATION; FEEDBACK; VOLUNTARY; ACCOUNT;
D O I
10.1038/s41598-022-20765-9
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Sensory prediction-error is vital to discriminating whether sensory inputs are caused externally or are the consequence of self-action, thereby contributing to a stable perception of the external world and building sense of agency. However, it remains unexplored whether prediction error of self-action is also used to estimate the internal body condition. To address this point, we examined whether prediction error affects the perceived intensity of muscle fatigue. Participants evaluated fatigue while maintaining repetitive finger movements. To provide prediction error, we inserted a temporal delay into online visual feedback of self-movements. The results show that the subjective rating of muscle fatigue significantly increased under the delayed visual feedback, suggesting that prediction error enhances the perception of muscle fatigue. Furthermore, we introduced visual feedback that preceded actual finger movements to test whether the temporal direction of the mismatch is crucial in estimating muscle fatigue. We found that perceived fatigue was significantly weaker with preceding visual feedback compared to normal feedback, showing that the perception of muscle fatigue is affected by the signed prediction-error. Our findings support the idea that the brain flexibly attributes prediction errors to a self-origin with keeping sense of agency, or external origin by considering contexts and error characteristics.
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页数:12
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