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PubMed · 10958914

First- and second-order processing in transient stereopsis.

M Edwards·D R Pope·C M Schor
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Abstract

Large-field stimuli were used to investigate the interaction of first- and second-order pathways in transient-stereo processing. Stimuli consisted of sinewave modulations in either the mean luminance (first-order stimulus) or the contrast (second-order stimulus) of a dynamic-random-dot field. The main results of the present study are that: (1) Depth could be extracted with both the first-order and second-order stimuli; (2) Depth could be extracted from dichoptically mixed first- and second-order stimuli, however, the same stimuli, when presented as a motion sequence, did not result in a motion percept. Based upon these findings we conclude that the transient-stereo system processes both first- and second-order signals, and that these two signals are pooled prior to the extraction of transient depth. This finding of interaction between first- and second-order stereoscopic processing is different from the independence that has been found with the motion system.

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Depth PerceptionHumansMaleMotion PerceptionVisual PathwaysJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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BibTeXRIS

M Edwards, D R Pope, C M Schor. 2000. First- and second-order processing in transient stereopsis.. https://doi.org/10.1016/s0042-6989(00)00126-7

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