A functional magnetic resonance imaging study of cortical regions associated with motor task execution and motor ideation in humans
A functional magnetic resonance imaging study of cortical regions associated with motor task execution and motor ideation in humans
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DOI：
10.1002/hbm.460030205
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发表时间：
1995
影响因子：
4.8
通讯作者：
Marc Leonardo;Jordan Fieldman;N. Sadato;G. Campbell;V. Ibáñez;L. Cohen;M. Deiber;P. Jezzard;T. Pons;R. Turner;D. Le Bihan;M. Hallett
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文献类型：
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作者：
Marc Leonardo;Jordan Fieldman;N. Sadato;G. Campbell;V. Ibáñez;L. Cohen;M. Deiber;P. Jezzard;T. Pons;R. Turner;D. Le Bihan;M. Hallett
虽然运动能力可以通过心理练习来提高，但运动任务的心理刺激(构思)的神经生理学基础还没有很好地确立。我们在1.5T时使用血氧水平依赖的对比回波平面成像来识别在运动任务的执行和构思过程中神经活动增加的区域。五名受试者依次进行手指对拇指对位的任务，并想象自己在没有实际肌肉运动的情况下执行任务。在所有受试者中，左侧初级感觉运动皮质在实际运动中的激活程度高于运动想象，但有两名受试者在运动想象中表现出显著的激活。在三名受试者中，左侧运动前区表现出与实际表现和想象表现类似的激活。这些发现支持初级运动区和运动前区参与运动构思。©1995 Wiley-Liss公司
Although motor performance may be enhanced through mental practice, the neurophysiological substrate of mental stimulation (ideation) of a motor task is not well established. We used blood oxygen level‐dependent contrast echo planar imaging at 1.5 T to identify regions of increased neural activity during the performance and ideation of a motor task. Five subjects performed a sequential finger‐to‐thumb opposition task and also imagined themselves performing the task in the absence of actual muscle movement. In all subjects, the left primary sensorimotor cortex showed more activation with actual movement than with motor ideation, but two subjects had significant activation with motor ideation. The left premotor area showed comparable activation with both actual and imagined performance in three subjects. These findings support the involvement of the primary motor area as well as the premotor area in motor ideation. © 1995 Wiley‐Liss, Inc.