Centre for Vision Research, York University, Toronto, Canada.
Department of Psychology, York University, Toronto, Canada.
Sci Rep. 2021 Jan 15;11(1):1627. doi: 10.1038/s41598-021-81031-y.
In motor learning, the slow development of implicit learning is traditionally taken for granted. While much is known about training performance during adaptation to a perturbation in reaches, saccades and locomotion, little is known about the time course of the underlying implicit processes during normal motor adaptation. Implicit learning is characterized by both changes in internal models and state estimates of limb position. Here, we measure both as reach aftereffects and shifts in hand localization in our participants, after every training trial. The observed implicit changes were near asymptote after only one to three perturbed training trials and were not predicted by a two-rate model's slow process that is supposed to capture implicit learning. Hence, we show that implicit learning is much faster than conventionally believed, which has implications for rehabilitation and skills training.
在运动学习中，内隐学习的缓慢发展传统上被认为是理所当然的。虽然人们已经了解了在适应到达、扫视和运动中的干扰时的训练表现，但对于正常运动适应过程中潜在的内隐过程的时间进程知之甚少。内隐学习的特点是内部模型和肢体位置状态估计的变化。在这里，我们在参与者每次训练试验后，都测量了到达后效和手部定位的变化。观察到的内隐变化仅在一到三个受干扰的训练试验后就接近渐近线，并且不能用假定捕获内隐学习的双速率模型的慢过程来预测。因此，我们表明内隐学习比传统上认为的要快得多，这对康复和技能训练具有重要意义。
