Dawson M R, Wright R D
Department of Psychology, University of Alberta, Edmonton, Canada.
Vision Res. 1994 Feb;34(3):397-407. doi: 10.1016/0042-6989(94)90098-1.
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.
特尔努斯配置是一种表观运动显示，通常被描述为双稳态；根据显示的时间特性，受试者通常会描述看到元素运动或群组运动。本文报告了一项实验结果，该实验中受试者也被允许报告看到四个静止的显示元素（同时性）。研究发现，当帧持续时间和刺激间隔（ISI）都很短暂的时候会产生同时性。由于获得了这种第三种类型的判断，因此揭示了刺激起始异步（SOA）的效果比预期的要弱。此外，统计分析表明，SOA本身并不是判断类型的最佳预测指标。持续时间和ISI之间的相互作用也是一个重要的预测指标。这表明，要完整解释特尔努斯配置需要两种机制：一种由SOA定律支配的可见持久性机制，以及一种由ISI定律支配的运动对应机制。这两种机制被添加到达森（1991年）[《心理学评论》，98，569 - 603]用于运动对应处理的自联想网络中。由此产生的模型可以在帧持续时间和ISI的适当组合下生成特尔努斯配置的三种解释中的每一种。
