PMID- 8160375 OWN - NLM STAT- MEDLINE DCOM- 19940518 LR - 20190728 IS - 0042-6989 (Print) IS - 0042-6989 (Linking) VI - 34 IP - 3 DP - 1994 Feb TI - Simultaneity in the Ternus configuration: psychophysical data and a computer model. PG - 397-407 AB - The Ternus configuration is an apparent motion display which is typically described as being bistable; subjects usually describe seeing either element motion or group motion, depending upon temporal properties of the display. The results of an experiment are reported in which subjects are also permitted to report seeing four stationary display elements (simultaneity). It was found that simultaneity was produced when both frame durations and interstimulus intervals (ISIs) were brief. A weaker than expected effect of stimulus onset asynchrony (SOA) was revealed because this third type of judgment was obtained. Furthermore, statistical analyses indicated that SOA was not by itself the best predictor of judgment type. The interaction between duration and ISI was also an important predictor. This suggested that a complete account of the Ternus configuration requires two mechanisms: a visible persistence mechanism, governed by an SOA law, and a motion correspondence mechanism, governed by an ISI law. These two mechanisms were added to Dawson's (1991) [Psychological Review, 98, 569-603] autoassociative network for motion correspondence processing. The resulting model could generate each of the three interpretations of the Ternus configuration at appropriate combinations of frame duration and ISI. FAU - Dawson, M R AU - Dawson MR AD - Department of Psychology, University of Alberta, Edmonton, Canada. FAU - Wright, R D AU - Wright RD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Vision Res JT - Vision research JID - 0417402 SB - IM MH - Association MH - *Computer Simulation MH - Figural Aftereffect/physiology MH - Humans MH - Judgment MH - *Models, Psychological MH - Motion Perception/*physiology MH - Psychophysics MH - Time Factors EDAT- 1994/02/01 00:00 MHDA- 1994/02/01 00:01 CRDT- 1994/02/01 00:00 PHST- 1994/02/01 00:00 [pubmed] PHST- 1994/02/01 00:01 [medline] PHST- 1994/02/01 00:00 [entrez] AID - 0042-6989(94)90098-1 [pii] AID - 10.1016/0042-6989(94)90098-1 [doi] PST - ppublish SO - Vision Res. 1994 Feb;34(3):397-407. doi: 10.1016/0042-6989(94)90098-1.