Localizing the onset of moving stimuli by pointing or relative judgment: Variations in the size of the Fröhlich effect

Abstract

In the Fröhlich effect, the perceived onset of a moving stimulus is displaced in the direction of motion. Previously, we observed that pointing movements produced a Fröhlich effect only when the onset position was highly predictable. Here, we show that relative judgments are not affected by spatial predictability if the relative judgment task is performed in isolation. However, when the two tasks vary randomly from trial to trial, effects of spatial predictability carry over to the perceptual task. Thus, observers' intentions before stimulus onset determine the way position signals are processed. An account in terms of sensory and motor maps is discussed.

DOI: 10.1016/j.visres.2007.11.024

Extracted Key Phrases

2 Figures and Tables

Cite this paper

@article{Msseler2008LocalizingTO, title={Localizing the onset of moving stimuli by pointing or relative judgment: Variations in the size of the Fr{\"{o}hlich effect}, author={Jochen M{\"{u}sseler and Sonja Stork and Dirk Kerzel}, journal={Vision Research}, year={2008}, volume={48}, pages={611-617} }