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Journal Article

Effects of stimulus material on the Fröhlich illusion

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Kerzel,  Dirk
MPI for Psychological Research (Munich, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Müsseler,  Jochen
MPI for Psychological Research (Munich, -2003), The Prior Institutes, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Kerzel, D., & Müsseler, J. (2002). Effects of stimulus material on the Fröhlich illusion. Vision Research, 42(2), 181-189. doi:10.1016/S0042-6989(01)00271-1.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-AEEA-F
Abstract
In the Fröhlich illusion, judgements of the first position of a moving object are typically displaced in the direction of motion. The illusion has been obtained with linear motion of a small target, and with rotary motion of a spatially extended line. We compared judgements of the initial orientation of a small dot and a line that rotated around the point of fixation. The illusion was absent with the dot, whereas it was reliably obtained with the line. When the density of the line was reduced to two dots, the illusion persisted. However, the illusion was absent when a half-line extending to only one side from fixation was presented. We discuss the results with respect to two attentional accounts of the Fröhlich illusion and an account based on spatiotemporal integration. © 2002 Elsevier Science Ltd. All rights reserved.