Sahraie A, Milders M, Niedeggen M
Department of Psychology, Vision Research Laboratories, University of Aberdeen, Aberdeen, UK.
Vision Res. 2001 Jun;41(13):1613-7. doi: 10.1016/s0042-6989(01)00065-7.
Recent studies have shown evidence for modulation of cortical activity by attention in visual areas involved in motion processing. Behavioural effects of this modulation have only been reported for high-order, but not for luminance-based motion. We show that attentional load can even affect the perception of a first-order motion inducing a short-termed motion blindness. The detection of transient coherent motion embedded in a rapid serial visual presentation was severely impaired if colour features were to be processed simultaneously. The findings reported here show attentional requirements can affect motion perception. This effect can not be explained by motion adaptation or priming and may instead arise from the suppression of irrelevant stimuli.
最近的研究表明，在涉及运动处理的视觉区域中，注意力可调节皮层活动。这种调节的行为效应仅在高阶运动中有所报道，而在基于亮度的运动中尚未见报道。我们发现，注意力负荷甚至会影响对诱导短期运动盲的一阶运动的感知。如果要同时处理颜色特征，那么嵌入快速序列视觉呈现中的瞬态连贯运动的检测会严重受损。此处报告的研究结果表明，注意力需求会影响运动感知。这种效应无法用运动适应或启动来解释，而可能是由于对无关刺激的抑制所致。
