Sato Y, Kawasaki T
Brain Res. 1984 Jan 2;290(1):25-31. doi: 10.1016/0006-8993(84)90732-7.
Anatomically, the cat's cerebellar flocculus can be divided into 3 zones on the basis of differences in their efferent projection sites. The functional differences of these 3 zones in relation to eye movement control were investigated by observing the eye movements evoked by electric stimulation of each zone of the flocculus in ketamine-anesthetized cats. Stimulation of the flocculus elicited a slow eye movement. The direction of the slow eye movement was mapped. A downward eye movement was evoked by stimulation of the caudal zone. An ipsilateral horizontal eye movement was induced from the middle zone. An upward eye movement was elicited from the rostral zone. When prolonged stimulation was applied to the flocculus, the slow eye movement was followed by nystagmus in the opposite direction. This nystagmus persisted for many seconds after cessation of stimulation (afternystagmus). Nystagmus and afternystagmus could not be elicited in deeply anesthetized cats. Possibilities as to how the stimulation leads to various eye movements are discussed.
在解剖学上，猫的小脑绒球可根据其传出投射部位的差异分为3个区域。通过观察氯胺酮麻醉猫的绒球各区域电刺激诱发的眼球运动，研究了这3个区域在眼球运动控制方面的功能差异。刺激绒球会引发眼球缓慢运动。绘制了眼球缓慢运动的方向。刺激尾侧区域会诱发眼球向下运动。从中部区域会诱发同侧水平眼球运动。从吻侧区域会诱发眼球向上运动。当对绒球进行长时间刺激时，眼球缓慢运动之后会出现相反方向的眼球震颤。这种眼球震颤在刺激停止后（眼震后效）会持续数秒。在深度麻醉的猫中无法诱发眼球震颤和眼震后效。文中讨论了刺激如何导致各种眼球运动的可能性。
