Illusory position shift induced by plaid motion
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Updated: Jun 20, 2026

Controlled Rotation of Human Observers in a Virtual Reality Environment
Published on: April 21, 2022
Rumi Hisakata1, Ikuya Murakami
1Department of Life Sciences, University of Tokyo, Tokyo, Japan. hisakata@fechner.c.u-tokyo.ac.jp
Abstract:
In the motion-induced position shift (MIPS), the position of a moving pattern tapered by a stationary envelope is perceived to shift in the direction of the motion. It was found that plaid motion also elicited a MIPS in the direction of global motion and this global MIPS could not be predicted by the average of the local MIPSs due to component motions. We also used a pseudo plaid pattern and again observed a global MIPS that could not be predicted by the local MIPSs due to the components of the pseudo plaid pattern. We suggest the possibility that the receptive-field positions of global motion detectors shift in the direction opposite to global motion, resulting in a positional displacement in activation via population coding.
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