Nozaki Daichi
Division of Physical and Health Education, Graduate School of Education, The University of Tokyo.
Brain Nerve. 2014 Apr;66(4):429-37.
Previous studies have tried to elucidate how kinematics of movement is uniquely represented in the brain. Considering the large number of neurons in the brain, however, it is possible that an identical movement is represented by distinct patterns of neural activity in the brain. Here, I first discuss the possible relationship between the neural representation and motor memory. Subsequently, I introduce several experimental examples from my laboratory showing that the redundancy of neural representations of movements might be reflected in the ability of the brain to switch flexibly between distinct motor memories (or internal models) for a physically identical movement depending on different behavioral contexts. I also demonstrate that the ability for forming and retrieving different sets of motor memories plays a functional role in motor control.
以往的研究试图阐明运动的运动学特征在大脑中是如何被独特表征的。然而，考虑到大脑中神经元数量众多，同一运动有可能由大脑中不同的神经活动模式来表征。在此，我首先讨论神经表征与运动记忆之间可能存在的关系。随后，我介绍几个来自我实验室的实验例子，这些例子表明，运动的神经表征冗余可能体现在大脑根据不同行为背景，对物理上相同的运动在不同运动记忆（或内部模型）之间灵活切换的能力上。我还证明，形成和检索不同运动记忆集的能力在运动控制中发挥着功能性作用。
