What neural pathways mediate express saccades?
What neural pathways mediate express saccades?
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DOI：
10.1017/s0140525x00031824
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发表时间：
1993-09
影响因子：
29.3
通讯作者：
Marc A. Sommer;Peter H. Schiller;R. McPeek
中科院分区：
文献类型：
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作者：
Marc A. Sommer;Peter H. Schiller;R. McPeek
近年来，眼动研究中最引人入胜，最有争议的观察之一是猴子和人类中的快速扫视现象。这些是具有如此短的反应时间（人为100毫秒，猴子中70毫秒）的扫视，以至于眼睛运动的一些专家仍然将其视为伪影或预期反应，而不需要任何进一步的解释。另一方面，一些研究小组不仅认为它们不仅是真实的，而且还考虑了研究扫视产生机制，视觉和眼动的协调以及视觉关注机制的宝贵手段。这本目标文章在眼动和相关研究中汇总了实验证据，特别着重于明确的扫视，以增强我们对视觉，视觉注意力以及眼睛运动的目前理解，从而扩展了视觉感知和认知。我们假设验光反射是造成快速扫视的原因，这是由较高的大脑功能控制的，这是由脱离视觉注意力和决策做出的较高的大脑功能所控制的。我们建议神经网络作为灵长类动物中验光系统的更精细数学模型或计算机模拟的基础。
One of the most intriguing and controversial observations in oculomotor research in recent years is the phenomenon of express saccades in monkeys and man. These are saccades with such short reaction times (100 msec in man, 70 msec in monkeys) that some experts on eye movements still regard them as artifacts or as anticipatory reactions that do not need any further explanation. On the other hand, some research groups consider them not only authentic but also a valuable means of investigating the mechanisms of saccade generation, the coordination of vision and eye movements, and the mechanisms of visual attention. This target article puts together pieces of experimental evidence in oculomotor and related research with special emphasis on the express saccade to enhance our present understanding of the coordination of vision, visual attention, and the eye movements subserving visual perception and cognition. We hypothesize that an optomotor reflex is responsible for the occurrence of express saccades, one that is controlled by higher brain functions involved in disengaged visual attention and decision making. We propose a neural network as the basis for more elaborate mathematical models or computer simulations of the optomotor system in primates.