Abstract
Our temporal perception can be lengthened or shortened by several factors. For example, the perceived duration of presented stimuli is lengthened by increasing the quantity of stimulus. In contrast, perceived duration is shortened as difficulty of concurrently imposed tasks increases. Previous studies have mainly examined factors that are consciously perceivable, and have found that they produce robust effects on the temporal perception. However, it has not been examined whether perceived duration is influenced by unconscious process, such as implicit memory. Here we review the studies investigating that time perception is affected by implicit/explicit memory, and discuss the effect of conscious/unconscious process on time perception.
