Document Detail


A multiscale spatial filtering account of the Wertheimer-Benary effect and the corrugated Mondrian.
MedLine Citation:
PMID:  11483179     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Blakeslee and McCourt [Blakeslee, B., & McCourt, M.E. (1997). Similar mechanisms underlie simultaneous brightness contrast and grating induction. Vision Research, 37, 2849-2869] demonstrated that a multiscale array of two-dimensional difference-of-Gaussian (DOG) filters provided a simple but powerful model for explaining a number of seemingly complex features of grating induction (GI), while simultaneously encompassing salient features of brightness induction in simultaneous brightness contrast (SBC), brightness assimilation and Hermann Grid stimuli. The DOG model (and isotropic contrast models in general) cannot, however, account for another important group of brightness effects including the White effect [White, M. (1997). A new effect of pattern on perceived lightness. Perception, 8, 413-416] and a variant of SBC [Todorovic, D. (1997). Lightness and junctions. Perception, 26, 379-395]. Blakeslee and McCourt [Blakeslee, B., McCourt, M.E. (1999). A multiscale spatial filtering account of the White effect, simultaneous brightness contrast and grating induction. Vision Research, 39, 4361-4377] developed a modified version of the model, an oriented (ODOG) model, which differed from the DOG model in that the filters were anisotropic and their outputs were pooled nonlinearly. Using this model, they were able to account for both groups of induction effects. The present paper examines two additional sets of brightness illusions that cannot be explained by isotropic contrast models. Psychophysical brightness matching is employed to quantitatively measure the size of the brightness effect for two Wertheimer-Benary stimuli [Benary, W. (1924). Beobachtungen zu einem experiment uber helligkeitskontrast. Psychologische Forschung, 5, 131-142; Todorovic, D. (1997). Lightness and junctions. Perception, 26, 379-395] and for low- and high-contrast versions of corrugated Mondrian stimuli [Adelson, E.H. (1993). Perceptual organization and the jugdement of brightness. Science, 262, 2042-2044; Todorovic, D. (1997). Lightness and junctions. Perception, 26, 379-395]. Brightness matches are obtained on both homogeneous and checkerboard matching backgrounds. The ODOG model qualitatively predicts the appearance of the test patches in the Wertheimer-Benary stimuli and corrugated Mondrian stimuli. In addition, it quantitatively predicts the relative magnitudes of the corrugated Mondrian effects in the various conditions. In general, the psychophysical results and ODOG modeling argue strongly that like SBC, GI, the White effect and Todorovic's SBC demonstration, induced brightness in Wertheimer-Benary stimuli and in the corrugated Mondrian primarily reflects early-stage filtering operations in the visual system.
Authors:
B Blakeslee; M E McCourt
Related Documents :
10755159 - Contrast facilitation in motion detection: evidence for a reichardt detector in human v...
1437449 - Asymmetric interactions in the processing of the visual dimensions of position, width, ...
11193099 - Long-term maturation of visual pathways.
16411499 - Critical band masking in optic flow.
2387359 - How vernier acuity depends on contrast.
8994579 - Precise assessment of the mean effective luminance of texture patches--an approach base...
20543739 - Postactivation potentiation: upper body force development changes after maximal force i...
19427219 - Modeling of postural stability borders during heel-toe rocking.
25353849 - Stationarity of extreme bursts in the solar wind.
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  41     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2001 Sep 
Date Detail:
Created Date:  2001-08-02     Completed Date:  2001-09-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2487-502     Citation Subset:  IM    
Affiliation:
Department of Psychology, North Dakota State University, Fargo, ND 58105-5075, USA. barbara_blakeslee@ndsu.nodak.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Contrast Sensitivity / physiology
Female
Humans
Light*
Male
Models, Neurological
Normal Distribution
Optical Illusions*
Psychophysics

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


Previous Document:  Sensitivity to modulation of color distribution in multicolored textures.
Next Document:  Eye movement control in reading unspaced text: the case of the Japanese script.