Effect of the luminance signal on adaptation-based time compression

被引:26
作者
Ayhan, Inci [1 ]
Bruno, Aurelio [1 ]
Nishida, Shin'ya [2 ]
Johnston, Alan [1 ,3 ]
机构
[1] UCL, Cognit Perceptual & Brain Sci Dept, London WC1 6BT, England
[2] NTT Corp, NTT Commun Sci Labs, Kanagawa, Japan
[3] UCL, CoMPLEX, London WC1 6BT, England
基金
英国经济与社会研究理事会; 英国惠康基金;
关键词
luminance channel; duration perception; magnocellular pathway; temporal; frequency; RETINAL GANGLION-CELLS; LATERAL GENICULATE-NUCLEUS; SACCADIC EYE-MOVEMENTS; HETEROCHROMATIC FLICKER; TEMPORAL FREQUENCY; MODULATION SENSITIVITY; CHROMATIC ABERRATION; PHYSIOLOGICAL-BASIS; APPARENT MOTION; HUMAN OBSERVERS;
D O I
10.1167/11.7.22
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Traditionally, time perception has been considered the product of a central, generic, cognitive mechanism. Recent evidence, however, has shown that high temporal frequency adaptation induces local reductions in the apparent duration of brief intervals suggesting a distributive system with modality-specific sensory components. Here, we examine the effect of the luminance signal on these adaptation-based temporal distortions. Our results show that the luminance signal is crucial to generate duration compression as the effect disappears at isoluminance and that low visibility and task difficulty at isoluminance cannot explain the discrepancy. We also demonstrate that the effects of adaptation on perceived duration are dissociable from those on apparent temporal frequency. These results provide further evidence for the involvement of the magnocellular system in the neural encoding and representation of visual time.
引用
收藏
页数:17
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