Spatial mislocalization as a consequence of sequential coding of stimuli

Priess, Heinz-Werner, Scharlau, Ingrid, Becker, Stefanie I. and Ansorge, Ulrich (2012) Spatial mislocalization as a consequence of sequential coding of stimuli. Attention Perception and Psychophysics, 74 2: 365-378. doi:10.3758/s13414-011-0239-y

Author Priess, Heinz-Werner
Scharlau, Ingrid
Becker, Stefanie I.
Ansorge, Ulrich
Title Spatial mislocalization as a consequence of sequential coding of stimuli
Journal name Attention Perception and Psychophysics   Check publisher's open access policy
ISSN 1943-3921
Publication date 2012-02-01
Year available 2011
Sub-type Article (original research)
DOI 10.3758/s13414-011-0239-y
Open Access Status Not Open Access
Volume 74
Issue 2
Start page 365
End page 378
Total pages 14
Place of publication New York, United States
Publisher Springer
Language eng
Formatted abstract
In three experiments, we tested whether sequentially coding two visual stimuli can create a spatial misperception of a visual moving stimulus. In Experiment 1, we showed that a spatial misperception, the flash-lag effect, is accompanied by a similar temporal misperception of first perceiving the flash and only then a change of the moving stimulus, when in fact the two events were exactly simultaneous. In Experiment 2, we demonstrated that when the spatial misperception of a flash-lag effect is absent, the temporal misperception is also absent. In Experiment 3, we extended these findings and showed that if the stimulus conditions require coding first a flash and subsequently a nearby moving stimulus, a spatial flash-lag effect is found, with the position of the moving stimulus being misperceived as shifted in the direction of its motion, whereas this spatial misperception is reversed so that the moving stimulus is misperceived as shifted in a direction opposite to its motion when the conditions require coding first the moving stimulus and then the flash. Together, the results demonstrate that sequential coding of two stimuli can lead to a spatial misperception whose direction can be predicted from the order of coding the moving object versus the flash. We propose an attentional sequential-coding explanation for the flash-lag effect and discuss its explanatory power with respect to related illusions (e. g., the Fröhlich effect) and other explanations.
Keyword Attention
Visual illusions
Prior entry
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 17 November 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Psychology Publications
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