Two- rather than three-dimensional representation of saccades in monkey superior colliculus.
Two- rather than three-dimensional representation of saccades in monkey superior colliculus.
复制标题
DOI：
10.1126/science.1925545
复制
发表时间：
1991-05
期刊：
影响因子：
56.9
通讯作者：
A. Opstal;K. Hepp;B. Hess;D. Straumann;V. Henn
中科院分区：
文献类型：
--
作者：
A. Opstal;K. Hepp;B. Hess;D. Straumann;V. Henn
扫视是由脑干网状结构中的神经元控制的，这些神经元接收来自上级丘和皮层的输入。最近已经提出了两个定量模型的丘在三维眼球运动的产生中的作用。为了测试这些模型，在警觉的猴子中测量三维眼球运动，以研究上级丘的扫视运动图是二维的（代表视网膜目标向量）还是三维的（代表眼球旋转的三维运动误差）。对上级丘的电刺激产生了二维而非三维的眼球运动。因此，可以得出结论，丘运动地图是二维的。
Saccades are controlled by neurons in the brainstem reticular formation that receive input from the superior colliculus and cortex. Recently two quantitative models have been proposed for the role of the colliculus in the generation of three-dimensional eye movements. In order to test these models, three-dimensional eye movements were measured in the alert monkey to investigate whether the saccadic motor map of the superior colliculus is two-dimensional, representing retinal target vectors, or three-dimensional, representing three-dimensional motor error for the rotation of the eye. Electrical stimulation of the superior colliculus produced two-dimensional, not three-dimensional, eye movements. It is therefore concluded that the collicular motor map is two-dimensional.