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首页> 外文期刊>The European Journal of Neuroscience >Distinct cortical networks support the planning and online control of reaching-to-grasp in humans
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Distinct cortical networks support the planning and online control of reaching-to-grasp in humans

机译:独特的皮质网络支持规划和在线控制人类的触手可及

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摘要

A number of brain imaging studies have identified regions involved in the planning and control of complex actions. Here we attempt to contrast activity related to planning and online control in the human brain during simple reaching and grasping movements. In four conditions, participants did one of the following: passively observed a grasp target; planned a grasping movement without executing; planned and then executed a grasp; or immediately executed a grasp. Neural activity was measured using functional magnetic resonance imaging and activity in the various conditions compared. Two large, independent networks of brain activity were identified: (i) a planning network including the premotor cortex, basal ganglia, anterior cingulate, posterior medial parietal area, superior parietal occipital cortex and middle intraparietal sulcus; and (ii) a control network including sensorimotor cortex, the cerebellum, the supramarginal gyrus and the superior parietal lobule. These findings provide evidence that the planning and control of even simple reaching and grasping actions use different brain regions, including different parts of the frontal and parietal lobes.
机译:许多脑成像研究已经确定了参与复杂动作计划和控制的区域。在这里,我们尝试在简单的触及和掌握动作期间对比与人脑中的计划和在线控制有关的活动。在四种情况下,参与者执行以下一项操作:被动观察抓握目标;没有执行就计划了抓地运动;计划然后执行一次掌握;或立即执行了掌握。使用功能性磁共振成像测量神经活动,并比较各种条件下的活动。确定了两个独立的大型大脑活动网络:(i)一个规划网络,包括运动前皮层,基底神经节,前扣带回,后顶叶内侧区,顶叶枕叶皮质和顶叶中沟; (ii)控制网络,包括感觉运动皮层,小脑,argargarginal回和顶上小叶。这些发现提供了证据,即使对简单的伸手和抓地动作的计划和控制也会使用不同的大脑区域,包括额叶和顶叶的不同部分。

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