Nakano Y
Department of Psychology, Faculty of Arts and Letters, Tohoku University, Kawauchi, Sendai.
Shinrigaku Kenkyu. 1997 Jun;68(2):140-5. doi: 10.4992/jjpsy.68.140.
Visual reaction time (RT) is reduced when the visual stimulus is paired with an auditory stimulus. This auditory stimulus is accessory in the sense that subjects need not to pay attention to it in the visual RT task. This study examined how the facilitation effect of the auditory accessory stimulus changes with varying the stimulus onset asynchrony (SOA) between the two stimuli, and their intensities. The results showed that RTs are reduced as the visual stimulus is preceded by the auditory stimulus. Furthermore, RTs are transiently reduced when the two stimuli are presented at the same time. The magnitude of this facilitation is directly proportional to the intensity of the auditory stimulus and is inversely proportional to that of the visual stimulus. These findings suggest that there are two different kinds of facilitation effects on visual RTs made by the auditory accessory stimulus.
当视觉刺激与听觉刺激配对时，视觉反应时间（RT）会缩短。这种听觉刺激是辅助性的，因为在视觉RT任务中，受试者无需关注它。本研究考察了听觉辅助刺激的促进作用如何随两种刺激之间的刺激开始异步性（SOA）及其强度的变化而变化。结果表明，当听觉刺激先于视觉刺激出现时，RT会缩短。此外，当两种刺激同时呈现时，RT会短暂缩短。这种促进作用的大小与听觉刺激的强度成正比，与视觉刺激的强度成反比。这些发现表明，听觉辅助刺激对视觉RT有两种不同类型的促进作用。
