1983 volume 12(5) pages 559 – 569
doi:10.1068/p120559

Cite as:
Carpenter D L, Dugan M P, 1983, "Motion parallax information for direction of rotation in depth: Order and Direction components" Perception 12(5) 559 – 569
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Motion parallax information for direction of rotation in depth: Order and Direction components

David L Carpenter, Michael P Dugan

Received 16 June 1981, in revised form 14 June 1983

Abstract. The work of Hershberger and his associates has demonstrated the effectiveness for judging direction of rotation in depth of several components of motion parallax. Confounding and conflicting results have made the status of two of these transformations, labeled Direction and Order, unclear. A study is reported in which the problems encountered in previous studies have been eliminated. College students correctly judged the direction of rotation of horizontal rows of dots which appeared to rotate in depth, which demonstrates that Direction and Order can, in fact, provide useful information about direction of motion in depth.

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