时间知觉和关联负变化

Time Perception and Contingent Negative Variation

关联负变化(contingent negative variation,CNV)被认为是与时间知觉过程有关的ERP成份。有关研究发现,CNV波幅会随着时间知觉到的长度和时间知觉的准确性而发生变化;CNV波幅的潜伏期与时间比较的判断决策过程有关;时间知觉中所诱发的CNV的脑内源存在历时性激活的特点且存在半球效应。为了进一步揭示时间知觉的神经机制,还需要结合具有高空间分辨率的脑成像技术和神经心理学的研究。

This review examined the relationship Contingent Negative Variation （CNV） and time perception in range .Drawn from the ERPs studies on time perception, the conclusions were ： the CNV amplitude was an index of temporal accumulator and accuracy; the CNV peak was an index of time-based decision making; and CNV time course differentiated the roles of the hemispheres during time processing. Finally, we suggested that the future research should further dissociate the ＂true＂ components of time perception from