A memory of errors in sensorimotor learning.
A memory of errors in sensorimotor learning.
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DOI：
10.1126/science.1253138
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发表时间：
2014-09-12
期刊：
影响因子：
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通讯作者：
Shadmehr R
中科院分区：
文献类型：
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作者：
Herzfeld DJ;Vaswani PA;Marko MK;Shadmehr R
目前对运动学习的看法表明，当我们重新执行一项任务时，大脑会回忆起之前学到的运动命令。按照这种观点，运动记忆是通过试错和强化获得的运动命令的记忆。在这里，我们表明，大脑通过一种取决于过去错误历史的原则性机制来控制它愿意从当前错误中学习的程度。这表明大脑存储了一种以前未知的记忆形式，即错误记忆。这个想法的数学表述提供了对一系列令人费解的实验数据的见解，包括储蓄和元学习，证明当我们在运动任务上做得更好时，部分原因是大脑认识到它之前经历过的错误。
The current view of motor learning suggests that when we revisit a task, the brain recalls the motor commands it previously learned. In this view, motor memory is a memory of motor commands, acquired through trial-and-error and reinforcement. Here we show that the brain controls how much it is willing to learn from the current error through a principled mechanism that depends on the history of past errors. This suggests that the brain stores a previously unknown form of memory, a memory of errors. A mathematical formulation of this idea provides insights into a host of puzzling experimental data, including savings and meta-learning, demonstrating that when we are better at a motor task, it is partly because the brain recognizes the errors it experienced before.