PMID- 8506650 OWN - NLM STAT- MEDLINE DCOM- 19930708 LR - 20190728 IS - 0042-6989 (Print) IS - 0042-6989 (Linking) VI - 33 IP - 8 DP - 1993 May TI - Transparent motion from feature- and luminance-based processes. PG - 1119-22 AB - The apparent motion of a discretely displaced complex waveform with a periodic contrast modulation or "beat" of frequency f and sinusoidal components of frequencies 3f and 4f was examined at various interstimulus intervals (ISIs). At short ISIs perception of motion of both the beat and an aliased component of the waveform results in transparent motion. At longer ISIs motion is perceived only in the direction of the features of the waveform. The transparent motion observed at short ISIs indicates that, under certain conditions, "short-range" motion sensors do not constrain "long-range" feature processing and both may be active simultaneously. FAU - Hammett, S T AU - Hammett ST FAU - Ledgeway, T AU - Ledgeway T FAU - Smith, A T AU - Smith AT LA - eng PT - Letter PT - Research Support, Non-U.S. Gov't PL - England TA - Vision Res JT - Vision research JID - 0417402 SB - IM MH - Adaptation, Ocular/physiology MH - Humans MH - Male MH - Motion Perception/*physiology MH - Pattern Recognition, Visual/physiology MH - Time Factors EDAT- 1993/05/01 00:00 MHDA- 1993/05/01 00:01 CRDT- 1993/05/01 00:00 PHST- 1993/05/01 00:00 [pubmed] PHST- 1993/05/01 00:01 [medline] PHST- 1993/05/01 00:00 [entrez] AID - 0042-6989(93)90245-R [pii] AID - 10.1016/0042-6989(93)90245-r [doi] PST - ppublish SO - Vision Res. 1993 May;33(8):1119-22. doi: 10.1016/0042-6989(93)90245-r.