MENTAL-IMAGERY IN THE MOTOR CONTEXT
MENTAL-IMAGERY IN THE MOTOR CONTEXT
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DOI：
10.1016/0028-3932(95)00073-c
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发表时间：
1995-11-01
期刊：
影响因子：
2.6
通讯作者：
JEANNEROD, M
中科院分区：
文献类型：
--
作者：
JEANNEROD, M
本文的工作假设是，运动意象被赋予与(相应的)运动表征相同的属性，因此与想象或表征的运动具有相同的功能关系，在这种运动的产生中具有相同的因果作用。模拟动作的定时与实际执行的动作的定时遵循相同的约束，这一事实与这一假设是一致的。因此，许多神经机制在运动想象中被激活，表现为想象移动的肢体的肌腱反射急剧增加，以及与精神努力水平相关的植物变化。在大脑皮层水平，在专门负责运动控制的区域观察到一种特殊的激活模式，这种模式与动作执行非常相似。这种激活可能是心理训练效果的底物。提出了一个行动组织的层次模型：该模型意味着对各种表征步骤的“副本”的短期记忆存储。当与所表示的目标相对应的动作发生时，这些记忆被擦除。相反，如果动作不完全或未执行，则整个系统保持激活状态，并排练表示的内容。这一机制将是在运动想象和心理训练期间有意识地获取这些内容的基础。
The working hypothesis of the paper is that motor images are endowed with the same properties as those of the (corresponding) motor representations, and therefore have the same functional relationship to the imagined or represented movement and the same causal role in the generation of this movement. The fact that the timing of simulated movements follows the same constraints as that of actually executed movements is consistent with this hypothesis. Accordingly, many neural mechanisms are activated during motor imagery, as revealed by a sharp increase in tendinous reflexes in the limb imagined to move, and by vegetative changes which correlate with the level of mental effort. At the cortical level, a specific pattern of activation, that closely resembles that of action execution, is observed in areas devoted to motor control. This activation might be the substrate for the effects of mental training. A hierarchical model of the organization of action is proposed: this model implies a short-term memory storage of a 'copy' of the various representational steps. These memories are erased when an action corresponding to the represented goal takes place. By contrast, if the action is incompletely or not executed, the whole system remains activated, and the content of the representation is rehearsed. This mechanism would be the substrate for conscious access to this content during motor imagery and mental training.