Konrad H R, Rea C, Olin B, Colliver J
Division of Otolaryngology, Southern Illinois University, School of Medicine, Springfield, 62794-9230.
Laryngoscope. 1989 Dec;99(12):1230-2. doi: 10.1288/00005537-198912000-00004.
Eye movement responses induced by vestibular, smooth pursuit, and optokinetic stimulation are largely dependent on the velocity of the stimulus. Saccade latencies, on the other hand, are a function of the anatomic and physiologic components of the reflex. By producing an audible click simultaneously with the movement of a visual target used to stimulate a saccadic eye movement, the saccade latency is significantly shortened. This does not appear to be due to alerting. It is probably due to an auditory input to the superior colliculus which decreased threshold for initiating a saccadic eye movement. Twenty normal participants were tested with or without the click stimulus. Latencies were significantly shorter when the click stimulus was presented simultaneously with the eye movement. The anatomic pathways in this reflex are reviewed in the presentation. This study provides further information on sensory interaction in saccade reflexes and emphasizes the need to control stimulus conditions during saccade testing.
前庭、平稳跟踪和视动刺激诱发的眼球运动反应在很大程度上取决于刺激的速度。另一方面，扫视潜伏期是该反射的解剖和生理成分的函数。通过在用于刺激眼球扫视运动的视觉目标移动的同时产生可听见的咔哒声，扫视潜伏期会显著缩短。这似乎不是由于警觉。这可能是由于上丘接收到听觉输入，从而降低了启动眼球扫视运动的阈值。20名正常参与者在有或没有咔哒声刺激的情况下接受了测试。当咔哒声刺激与眼球运动同时出现时，潜伏期明显更短。本报告中回顾了该反射的解剖路径。这项研究提供了关于扫视反射中感觉相互作用的进一步信息，并强调了在扫视测试期间控制刺激条件的必要性。
