Coordination of smooth pursuit and saccade target selection in monkeys
Coordination of smooth pursuit and saccade target selection in monkeys
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DOI：
10.1152/jn.00021.2007
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发表时间：
2007-10-01
影响因子：
2.5
通讯作者：
Ferrera, Vincent P.
中科院分区：
文献类型：
--
作者：
Case, Gilbert R.;Ferrera, Vincent P.
使用目标选择范式研究了猕猴扫视和平滑追踪眼球运动的协调，其中两个移动目标在中心注视点交叉。猴子根据颜色选择目标的任务被用来测试以下假设：共同的神经信号是追逐和扫视目标选择的基础，并测试目标选择信号是否可同时或顺序用于扫视和追踪系统。使用了目标颜色、速度和方向的多种组合。在所有情况下，在任何扫视发生之前，对奖励目标的平滑追踪都是高度选择性的。在超过 80% 的试验中，眼跳的目标与眼跳前和眼跳后的追踪相同。结果支持一种模型，其中共享目标选择信号同时可用于扫视和追踪系统，而不是顺序模型。
The coordination of saccadic and smooth pursuit eye movements in macaque monkeys was investigated using a target selection paradigm with two moving targets crossing at a center fixation point. A task in which monkeys selected a target based on its color was used to test the hypothesis that common neural signals underlie target selection for pursuit and saccades, as well as testing whether target selection signals are available to the saccade and pursuit systems simultaneously or sequentially. Several combinations of target color, speed, and direction were used. In all cases, smooth pursuit was highly selective for the rewarded target before any saccade occurred. On > 80% of the trials, the saccade was directed toward the same target as both pre- and postsaccadic pursuit. The results favor a model in which a shared target selection signal is simultaneously available to both the saccade and pursuit systems, rather than a sequential model.