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Petersik J T, Rice C M, 2008, "Spatial correspondence and relation correspondence: Grouping factors that influence perception of the Ternus display" Perception 37(5) 725 – 739
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Spatial correspondence and relation correspondence: Grouping factors that influence perception of the Ternus display

J Timothy Petersik, Curran M Rice

Received 10 November 2006, in revised form 18 May 2007; published online 9 May 2008

Abstract. We cite two different perceptual-correspondence principles whose emphasis can help to disambiguate the otherwise ambiguous Ternus display in apparent movement (a display that can alternately be seen in one of two possible configurations). One of these principles is spatial correspondence, which emphasizes the maintenance of similar stimulus elements in given locations over time. The other principle is relation correspondence, which emphasizes the maintenance of the inter-organization of stimulus elements across frames. Each of four experiments reported here made use of a different stimulus feature (eg element color or element texture) to emphasize these different correspondence principles in Ternus displays. As predicted, an emphasis upon spatial correspondence resulted in an increase in reports of element movement compared to a featureless control condition. Emphasis on relation correspondence resulted in an increase in reports of group movement. Extensions and limitations of the use of these principles to explain apparent movement are discussed.

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