Eye direction aftereffect
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Updated: Aug 22, 2026

VisualEyes: A Modular Software System for Oculomotor Experimentation
Published on: March 25, 2011
Jun'ichiro Seyama1, Ruth S Nagayama
1Department of Psychology, Faculty of Letters, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Lseyama@mail.ecc.u-tokyo.ac.jp
Abstract:
Three experiments using computer-generated human figures showed that after a prolonged observation of eyes looking to the left (or right), eyes looking directly toward the viewer appeared directed to the right (or left). Observation of an arrow pointing left or right did not induce this aftereffect on the perceived eye direction. Happy faces produced the aftereffect more effectively than surprised faces, even though the image features of the eyes were identical for both the happy and the surprised faces. These results suggest that the eye direction aftereffect may reflect the adaptation of relatively higher-level mechanisms analyzing the other's eye direction.
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