Stampe Dave M, Reingold Eyal M
Department of Psychology, University of Toronto, 100 St. George Street, Toronto, ON M5S 3G3, Canada.
Prog Brain Res. 2002;140:73-87. doi: 10.1016/S0079-6123(02)40043-X.
Participants read or performed visual search while the normal task display was replaced for 33 ms by a transient image at random intervals. This produced a sharp reduction in saccadic frequency (saccadic inhibition) beginning as early as 70 ms following the display change. It was found that the latency of inhibition onset was determined by the difference between the normal and transient images, with changes in high spatial frequency content of the display resulting in longer latencies than changes in low spatial frequencies. Luminance changes evoked the fastest inhibition onset regardless of the spatial frequency content of the display change.
参与者在进行阅读或视觉搜索任务时，正常的任务显示会以随机间隔被一幅瞬态图像取代33毫秒。这导致扫视频率急剧下降（扫视抑制），最早在显示变化后70毫秒就开始出现。研究发现，抑制开始的潜伏期取决于正常图像和瞬态图像之间的差异，显示中高空间频率内容的变化比低空间频率的变化导致更长的潜伏期。无论显示变化的空间频率内容如何，亮度变化引起的抑制开始最快。
