EXPRESS SACCADES AND VISUAL-ATTENTION
EXPRESS SACCADES AND VISUAL-ATTENTION
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DOI：
10.1017/s0140525x00031575
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发表时间：
1993-09-01
影响因子：
29.3
通讯作者：
WEBER, H
中科院分区：
文献类型：
--
作者：
FISCHER, B;WEBER, H
近年来，动眼运动研究中最耐人寻味和最具争议的观察之一是猴子和人类的快速眼跳现象。这些眼跳的反应时间如此之短(人类为106毫秒，猴子为70毫秒)，以至于一些眼球运动专家仍然将其视为人工制品或不需要任何进一步解释的预期反应。另一方面，一些研究小组认为它们不仅是真实的，而且是研究眼跳产生机制、视觉和眼睛运动的协调以及视觉注意机制的有价值的手段。本文将眼球运动和相关研究的实验证据结合在一起，特别是对表情眼跳的研究，以增强我们目前对视觉、视觉注意和眼睛运动的协调的理解，这些协调有助于视觉感知和认知。我们假设，视觉运动反射是导致眼跳发生的原因，这种眼跳是由参与脱离视觉注意和决策的高级大脑功能控制的。我们提出了一种神经网络作为灵长类视觉运动系统更精细的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 (106 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.