This review examined the relationship Contingent Negative Variation (CNV) and time perception in millisecond-to-second 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 CNV