Document Detail

Investigating the contribution of metacontrast to the Fröhlich effect for size.
MedLine Citation:
PMID:  18485323     Owner:  NLM     Status:  MEDLINE    
According to the Fröhlich effect, observers perceive the initial position of a fast moving stimulus displaced in the direction of motion. On the basis of Kirschfeld and Kammer's as well as Fröhlich's original assumption that metacontrast plays an important role in the emergence of the phenomenon, we predicted different amounts of misperception for stimulus enlargement compared to stimulus reduction. These basic predictions were confirmed in Experiment 1. In Experiment 2, we investigated whether an overestimation-bias might account for these results. But the overestimation of non-changing stimuli was too small to adequately explain the dissociation. In Experiment 3, we predicted and found different effects of the factor stimulus lightness on misperception in the enlargement and reduction condition. In Experiment 4, we showed that misperception in the enlargement condition is reduced when frames are used instead of filled stimuli, as in the earlier experiments. Results are discussed with respect to the original Fröhlich effect.
Elena Carbone; Ulrich Ansorge
Related Documents :
12422953 - Additive factors analysis of reaction time with alphanumericals and line orientations a...
1192553 - Interaction of sequential stimuli applied during the relative refractory period in rela...
18597853 - Wavelet filtering before spike detection preserves waveform shape and enhances single-u...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-05-15
Journal Detail:
Title:  Acta psychologica     Volume:  128     ISSN:  0001-6918     ISO Abbreviation:  Acta Psychol (Amst)     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-06     Completed Date:  2008-09-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370366     Medline TA:  Acta Psychol (Amst)     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  361-7     Citation Subset:  IM    
Department of Psychology, Bielefeld University, Bielefeld, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Motion Perception*
Psychology / methods
Size Perception*
Visual Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Interventions for cognitive deficits in adults with brain tumours.
Next Document:  Investigations on the transmissibility of Trypanosoma congolense by the tsetse fly Glossina morsitan...