Trouillas P
Service de Neurologie B, Faculté Alexis-Carrel, Hôpital neurologique, Lyon.
C R Acad Sci III. 1989;309(19):715-21.
Imitation synkineses had not been described in cerebellar ataxia and were not known in cerebellar experimental neurophysiology. We describe here imitation synkineses when alternate movements of foot or hand were performed, in 2 cases of pure genetic cerebellar ataxia. The phenomenon was observed in other types of cerebellar ataxia (8 cases of anterior lobe cortical atrophy, 2 cases of surgical injury of the vermis). More imitation synkineses occurred on the right side in right-handed subjects, suggesting that the cerebellum physiologically inhibits a contralateral transfer of the copy of the movement. This inhibition would be particularly effective on the dominant side.
模仿联带运动在小脑性共济失调中尚未被描述，在小脑实验神经生理学中也不为人所知。我们在此描述了2例纯遗传性小脑性共济失调患者在进行足部或手部交替运动时出现的模仿联带运动现象。在其他类型的小脑性共济失调中也观察到了这种现象（8例额叶皮质萎缩，2例蚓部手术损伤）。在右利手受试者中，右侧出现的模仿联带运动更多，这表明小脑在生理上抑制了运动副本的对侧传递。这种抑制在优势侧可能会特别有效。
