Implicit reward-based motor learning.
Implicit reward-based motor learning.
复制标题
基于内隐奖赏的运动学习。
DOI：
10.1007/s00221-023-06683-w
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发表时间：
2023-09
影响因子：
2
通讯作者：
Ivry, Richard B.
中科院分区：
文献类型：
--
作者：
van Mastrigt, Nina M.;Tsay, Jonathan S.;Wang, Tianhe;Avraham, Guy;Abram, Sabrina J.;van der Kooij, Katinka;Smeets, Jeroen B. J.;Ivry, Richard B.
关键词：
只提供任务成功或失败信息的二元反馈足以驱动运动学习。虽然二元反馈可以诱导运动策略的外显调整，但这种类型的反馈是否也会导致内隐学习还不清楚。在组间设计中，我们通过逐渐将一个看不见的奖赏区域从视觉目标移动到最后的7.5°或25°旋转来检验这个问题。参与者收到了二元反馈，表明运动是否与奖励区域相交。到训练结束时，两组人都将伸展角度调整了约95%的旋转。我们通过测量随后的无反馈后效阶段的表现来量化内隐学习，在这个阶段，参与者被告知放弃任何采用的运动策略，直接到达视觉目标。结果显示，两组都有一个很小但很强(2-3°)的后遗症，这突显了二元反馈引起的内隐学习。值得注意的是，对于两组人来说，到达两个侧翼泛化目标的偏向与后效方向相同。这种模式与内隐学习是使用依赖型学习的一种形式的假设不符。相反，结果表明，二元反馈足以重新校准感觉运动图。网上版载有补充材料，可在10.1007/s00221-023-023-w查阅。
Binary feedback, providing information solely about task success or failure, can be sufficient to drive motor learning. While binary feedback can induce explicit adjustments in movement strategy, it remains unclear if this type of feedback also induces implicit learning. We examined this question in a center-out reaching task by gradually moving an invisible reward zone away from a visual target to a final rotation of 7.5° or 25° in a between-group design. Participants received binary feedback, indicating if the movement intersected the reward zone. By the end of the training, both groups modified their reach angle by about 95% of the rotation. We quantified implicit learning by measuring performance in a subsequent no-feedback aftereffect phase, in which participants were told to forgo any adopted movement strategies and reach directly to the visual target. The results showed a small, but robust (2–3°) aftereffect in both groups, highlighting that binary feedback elicits implicit learning. Notably, for both groups, reaches to two flanking generalization targets were biased in the same direction as the aftereffect. This pattern is at odds with the hypothesis that implicit learning is a form of use-dependent learning. Rather, the results suggest that binary feedback can be sufficient to recalibrate a sensorimotor map. The online version contains supplementary material available at 10.1007/s00221-023-06683-w.
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