DIFFERENT FORMS OF BLINKS AND THEIR 2-STAGE CONTROL
DIFFERENT FORMS OF BLINKS AND THEIR 2-STAGE CONTROL
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DOI：
10.1007/bf00340495
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发表时间：
1986-01-01
影响因子：
2
通讯作者：
EVINGER, C
中科院分区：
文献类型：
--
作者：
MANNING, KA;EVINGER, C
本文的目的是研究眨眼的运动学和不同刺激物反射性诱发眨眼的神经基础。记录了兔三叉和视觉诱发眨眼时上眼睑运动的运动学和眼睑肌提睑肌和眼轮匝肌的肌电图反应。我们发现眨眼之间存在基本的运动学差异。与对闪光的反应相比，对喷气的反应更快，速度也更快。这两种形式的反射性眨眼是由于对抗性眼睑肌运动神经元活动的性质和时间的差异造成的。然而，眨眼神经控制的大多数特征是两种反射性眨眼共同的。最重要的是，眨眼似乎是由两阶段的神经控制产生的，早期的部分是预先编程的，晚期的部分是在刺激控制下的。
The purpose of this paper is to examine blink kinematics and the neural basis of blinks evoked reflecxively by different kinds of stimuli. The kinematics of the upper lid movement and the electromyographic response of lid muscles levator palpebrae and orbicularis oculi were recorded in the rabbit during trigeminally and visually-evoked blinks. We find that there is a basic, kinematic difference between blinks. A blink in response to an airpuff is more rapidly accomplished and achieves a higher velocity than does an equal amplitude blink in response to a flash of light. The two forms of the reflex blink result from differences in the nature and timing of activity in antagonistic lid muscle motoneurons. Nevertheless, most characteristics of blink neural control are common to both reflex blinks. Most importantly, it appears that blinks are produced by two-stage neural control, an early component that is preprogrammed and a late component that is under stimulus control.