Parsons L M, Fox P T
Research Imaging Center, University of Texas Health Science Center at San Antonio 78284, USA.
Int Rev Neurobiol. 1997;41:255-71. doi: 10.1016/s0074-7742(08)60355-4.
New neuroimaging studies provide striking evidence that the cerebellum is intensely and selectively active during sensory and cognitive tasks, even in the absence of explicit or implicit motor behavior. Focal activity is observed in the lateral cerebellar hemispheres during the processing of auditory, visual, cutaneous, spatial, and tactile information, and in anterior-medial cerebellar regions during somatomotor behavior. Moreover, a double dissociation exists between (a) cerebellar activity and sensory processing and (b) motor behavior and activity in known motor areas in the cerebral cortex. These findings contradict the classical motor coordination theory of cerebellar function but are predicted by, or are at least consistent with, new alternative theories.
新的神经影像学研究提供了惊人的证据，表明即使在没有明显或隐性运动行为的情况下，小脑在感觉和认知任务期间也会强烈且选择性地活跃。在处理听觉、视觉、皮肤、空间和触觉信息时，在小脑外侧半球观察到局灶性活动，而在躯体运动行为期间，在前内侧小脑区域观察到局灶性活动。此外，在（a）小脑活动与感觉处理之间以及（b）运动行为与大脑皮层已知运动区域的活动之间存在双重分离。这些发现与小脑功能的经典运动协调理论相矛盾，但由新的替代理论预测，或者至少与新的替代理论一致。
