Department of Neurobiology and Anatomy, Wake Forest School of Medicine, Winston-Salem, North Carolina.
J Neurophysiol. 2020 Feb 1;123(2):451-453. doi: 10.1152/jn.00328.2019. Epub 2019 Oct 2.
We make a saccadic eye movement once every few hundred milliseconds; however, the neural control of saccade execution is not fully understood. Dynamic, moment-by-moment variations in saccade velocity are typically thought to be controlled by neurons in the lower, but not the upper regions of the brainstem. In a recent report, Smalianchuk et al. (Smalianchuk I, Jagadisan UK, Gandhi NJ. 38: 10156-10167, 2018) provided strong evidence for a role of the superior colliculus, a midbrain structure, in the instantaneous control of saccade velocity, suggesting the revision of long-standing models of oculomotor control.
我们每几百毫秒就会进行一次扫视眼动；然而，扫视执行的神经控制还不完全清楚。通常认为，扫视速度的动态、即时变化是由脑干下部的神经元控制的，而不是由脑干上部的神经元控制的。在最近的一篇报道中，斯马利亚琴克等人（Smalianchuk I, Jagadisan UK, Gandhi NJ. 38: 10156-10167, 2018）提供了强有力的证据，证明中脑结构上丘在扫视速度的即时控制中发挥了作用，这表明对眼球运动控制的长期模型进行了修正。
