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ISSN : 1226-9654

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Vol.12 No.2

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Extraretinal Eye Position Information and Monocular Perception of Direction

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2000, v.12 no.2, pp.167-184
Kwonsaeng Park (Department of Psychology, Keimyung University)
Park, K. (2000). Extraretinal Eye Position Information and Monocular Perception of Direction. The Korean Journal of Cognitive and Biological Psychology, 12(2), 167-184.

Abstract

Two experiments tested whether the extra-retinal eye position information (EEPI) used in computing monocular egocentric visual direction originated from eye muscle proprioception("inflow") or efference copy("outflow"). Immediately after inducing potentiation in the extraocular muscle, one of the eyes was cxcluded to induce phoria. Both phoria and open-loop pointing errors were measured before and after potentiation. The results showed that even when potentiation did not modulate the size of phoria (the position of the occluded eye), it changed the size of pointing error, indicating that EEPI used in determining monocular visual direction is efference copy rather than phoria (real position of the occluded eye).

keywords
Monocular visual direction, Inflow theory, Outflow theory, Extra-retinal eye position information, phoria
Submission Date
2000-12-23
Revised Date
Accepted Date

The Korean Journal of Cognitive and Biological Psychology

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