Abstract

There is debate about how implicit and explicit processes interact in sensorimotor adaptation, implicating how error signals drive learning. Target error information is thought to primarily influence explicit processes, therefore manipulations to the veracity of this information should impact adaptation but not implicit recalibration (i.e. after-effects). Thirty participants across three groups initially adapted to rotated cursor feedback. Then we manipulated numeric target error through knowledge of results (KR) feedback, where groups practised with correct or incorrect (+/-15°) numeric KR. Participants adapted to erroneous KR, but only the KR + 15 group showed augmented implicit recalibration, evidenced by larger after-effects than before KR exposure. In the presence of sensory prediction errors, target errors modulated after-effects, suggesting an interaction between implicit and explicit processes.

摘要

关于内隐和外显过程如何在感觉运动适应中相互作用，以及错误信号如何驱动学习，存在争议。目标误差信息被认为主要影响显式过程，因此对该信息准确性的操纵应该影响适应，但不会影响隐式重新校准（即后效）。三组的三十名参与者最初适应了旋转光标反馈。然后，我们通过结果知识 (KR) 反馈来操纵数字目标误差，其中各组使用正确或不正确 (+/-15°) 数字 KR 进行练习。参与者适应了错误的 KR，但只有 KR + 15 组表现出增强的隐式重新校准，这通过比 KR 暴露之前更大的后效应来证明。在存在感官预测错误的情况下，目标错误会调节后遗症，表明隐性过程和显性过程之间存在相互作用。