title: Effect of motion coherence on time perception relates to perceived speed.
abstract: The present study examined the effect of coherence of moving visual objects on time perception. Participants observed stimuli composed of four line segments moving behind or in front of occluders. The line segments appeared to move either coherently as a diamond outline or incoherently, depending on the occlusion. Results from the temporal bisection task indicated that the duration of the coherently moving stimulus was perceived longer or shorter compared to the duration of the incoherently moving stimulus depending on the stimulus configurations. The speed comparison task revealed that the trend of the difference in perceived speed between the coherent and incoherent motions in each stimulus configuration was consistent with that of the difference in perceived duration between them. These results demonstrate the effect of motion coherence on perceived duration, and that this effect may be mediated by changes in perceived speed. Our finding provides evidence supporting the involvement of global motion processing in time perception.
authors.affiliation: Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan; Faculty of Science and Engineering, Waseda University, Tokyo, Japan; Japan Society for the Promotion of Science, Japan. Electronic address: yamamoto.kntr@gmail.com.
authors.forename: Kentaro
authors.initials: K
authors.lastname: Yamamoto
authors.affiliation: Faculty of Human-Environment Studies, Kyushu University, Japan.
authors.forename: Kayo
authors.initials: K
authors.lastname: Miura
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D013998:Time Perception / Q000502:physiology*; D055815:Young Adult
keywords: Coherence; Global motion processing; Perceived speed; Temporal bisection; Time perception