闪光滞后效应并非知觉延迟差异所致  

The Flash-Lag Effect:Latency Difference Is Not the Cause

作　　者：沈模卫[1] 董一胜[1] 周吉帆[1] 马飞[1] 张海琦[1] 

机构地区：[1]浙江大学心理与行为科学系,杭州310028

出　　处：《应用心理学》2010年第1期3-11,共9页Chinese Journal of Applied Psychology

基　　金：国家自然科学基金(30870765);教育部哲学社会科学研究重大课题攻关项目(07JZD0029);国家基础科学人才培养基金(J0730753);中国高校基本科研业务专项基金

摘　　要：闪光滞后效应(flash-lag effect)是指在与运动物体一致的位置上呈现闪光(flash),知觉上闪光落后于运动物体的视错觉。延迟差异理论认为,产生该现象的原因是视觉系统加工闪光的速度比加工运动物体慢。根据该理论,作者预测:如采用知觉加工速度更快(或更慢)的客体替代闪光,应能相应地产生更小(或更大)的闪光滞后效应。为了检验该预测,作者以"客体突现"(onset)和"客体消失"(offset)替代闪光滞后实验中的闪光,结果发现,"突现"的知觉滞后大于"消失",但时序判断任务表明"突现"的知觉延迟比"消失"短。该结果并不支持延迟差异理论。The flash-lag effect is a robust visual illusion in which a flash appears to spatially lag a continuously moving stimulus, even though actually both stimuli are precisely aligned. The differential latency model suggests that the flash-lag effect occurs because the flash is processed slower than the moving object. Ac- cordingly it should be predicted that using another visual event with shorter/longer perceptual latency to replace the flash could induce a smaller/larger illu- sory lag. Three experiments were conducted to test this prediction utilizing onset/offset instead of flash in the classical flash-lag paradigm. The results indi- cated that the onset-lag was significantly larger than the flash-lag and the offset-lag, though the perceptual latency of onset was shorter than offset in the subjec- tive simultaneity judgment. The findings were incon- sistent with the prediction of the differential latency model, or of other models which suggest that the flash-lag effect reflects the perceptual mechanism of compensating perceptual latency.

关 键 词：闪光滞后效应 延迟差异 后测理论 

分 类 号：B842[哲学宗教—基础心理学]