title: The effects of spatial frequency and temporal waveform on three measures of temporal processing.
abstract: The effects of spatial frequency and temporal transition of sine-wave grating onset and offset were assessed using measures of reaction time, visual persistence, and temporal order judgements. The stimuli were lateralized fields, separated by 1 degree of visual angle. Slow temporal transition resulted in significantly poorer performance than did abrupt onset and offset, but spatial frequency had a minimal effect. Thus, the latency, temporal resolution, and temporal ordering of events are mediated by a mechanism that is sensitive to abrupt temporal transients. The stimulus conditions employed did not result in a shift in the point of subjective simultaneity.
authors.affiliation: Department of Psychology, University of New Orleans.
authors.forename: J G
authors.initials: JG
authors.lastname: May
authors.forename: F
authors.initials: F
authors.lastname: Martin
authors.forename: F
authors.initials: F
authors.lastname: MacCana
authors.forename: W J
authors.initials: WJ
authors.lastname: Lovegrove
mesh_terms: D001288:Attention; D005556:Form Perception; D006801:Humans; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D011930:Reaction Time; D013998:Time Perception