Kostandov E A, Zakharova N N, Pogrebinskiĭ S A
Zh Vyssh Nerv Deiat Im I P Pavlova. 1978 Jan-Feb;28(1):33-40.
The study was made on healthy adult subjects. The reaction time of the hand (RT) was measured under two conditions: 1) the choice of reaction (right or left hand) is determined by the nature of the warning stimulus; 2) decision on the choice is taken, depending on the second, trigger stimulus. Stimuli are presented at random sequences to different visual fields. The reaction time to the visual signal presented to the visual field ipsilateral to the hand is significantly shorter (by 15 to 26 msec) than to the stimulus in the contralateral visual field. In a simple motor reaction, when no discrimination of trigger stimulus and the decision on the choice of reaction is required, a hemispheric asymmetry of reaction time is manifested: the left hemisphere only responds differently to direct visual stimulation and to that mediated through the contralateral hemisphere.
该研究针对健康成年受试者进行。在两种条件下测量手部的反应时间（RT）：1）反应（右手或左手）的选择由警告刺激的性质决定；2）根据第二个触发刺激做出反应选择的决定。刺激以随机序列呈现给不同视野。呈现给手部同侧视野的视觉信号的反应时间明显短于对侧视野中的刺激（短15至26毫秒）。在简单的运动反应中，当不需要区分触发刺激和做出反应选择的决定时，会表现出反应时间的半球不对称性：仅左半球对直接视觉刺激和通过对侧半球介导的刺激反应不同。
