Visuokinesthetic Perception of Hand Movement is Mediated by Cerebro-Cerebellar Interaction between the Left Cerebellum and Right Parietal Cortex
Visuokinesthetic Perception of Hand Movement is Mediated by Cerebro-Cerebellar Interaction between the Left Cerebellum and Right Parietal Cortex
复制标题
DOI：
10.1093/cercor/bhn068
复制
发表时间：
2009-01-01
期刊：
影响因子：
3.7
通讯作者：
Naito, Eiichi
中科院分区：
文献类型：
--
作者：
Hagura, Nobuhiro;Oouchida, Yutaka;Naito, Eiichi
视觉和动觉信息的结合对于感知身体运动是必不可少的。我们进行了行为和功能磁共振成像实验，以调查的神经元相关的视觉动觉组合的感知手的运动。参与者经历了虚幻的屈曲运动，他们的手引起的肌腱振动，而他们观看视频记录的弯曲（一致：CONG）或伸展（不一致：INCONG）运动，他们的手。只有当手部运动的视觉信息与动觉信息（CONG）一致时，才用视觉速度对错觉体验的量进行分级。左后外侧小脑在CONG下被特异性激活，左手和右手的左小脑激活是一致的。左侧小脑活动反映了参与者在CONG下的错觉手运动的强度，我们进一步表明，在这种视觉运动觉组合/感知过程中，左侧小脑和“右侧”顶叶皮层之间的活动耦合出现。“左”小脑与“右”顶叶皮层的解剖学连接的高级身体区域一起工作，参与外感受（视觉）和内感受（动觉）信息的在线组合，以感知手部运动。当从视觉和动觉信息中感知身体运动时，小脑-小脑的相互作用可能是一个人“身体意象”更新的基础。
Combination of visual and kinesthetic information is essential to perceive bodily movements. We conducted behavioral and functional magnetic resonance imaging experiments to investigate the neuronal correlates of visuokinesthetic combination in perception of hand movement. Participants experienced illusory flexion movement of their hand elicited by tendon vibration while they viewed video-recorded flexion (congruent: CONG) or extension (incongruent: INCONG) motions of their hand. The amount of illusory experience was graded by the visual velocities only when visual information regarding hand motion was concordant with kinesthetic information (CONG). The left posterolateral cerebellum was specifically recruited under the CONG, and this left cerebellar activation was consistent for both left and right hands. The left cerebellar activity reflected the participants' intensity of illusory hand movement under the CONG, and we further showed that coupling of activity between the left cerebellum and the "right" parietal cortex emerges during this visuokinesthetic combination/perception. The "left" cerebellum, working with the anatomically connected high-order bodily region of the "right" parietal cortex, participates in online combination of exteroceptive (vision) and interoceptive (kinesthesia) information to perceive hand movement. The cerebro-cerebellar interaction may underlie updating of one's "body image," when perceiving bodily movement from visual and kinesthetic information.