Neural correlates of shape-from-shading

Visual evoked potentials were recorded during presentation of a single stimulus that generated bi-stable perceptual alternation between two different three-dimensional percepts. One interpretation (asymmetric) changed depth structure from flat to corrugated in depth and the other (symmetric) had the...

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Bibliographic Details
Published in:Vision research (Oxford) 2006-03, Vol.46 (6), p.1080-1090
Main Authors: Hou, Chuan, Pettet, Mark W., Vildavski, Vladimir Y., Norcia, Anthony M.
Format: Article
Language:English
Subjects:
3D-shape
Adult
Bi-stable perception
Biological and medical sciences
Depth Perception - physiology
Electroencephalography
Evoked Potentials, Visual - physiology
Eye Movements - physiology
Form Perception - physiology
Fundamental and applied biological sciences. Psychology
Humans
Junctions
Middle Aged
Motion Perception - physiology
Pattern Recognition, Visual - physiology
Perception
Photic Stimulation - methods
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Shading
Vision
Visual evoked potentials
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Summary:Visual evoked potentials were recorded during presentation of a single stimulus that generated bi-stable perceptual alternation between two different three-dimensional percepts. One interpretation (asymmetric) changed depth structure from flat to corrugated in depth and the other (symmetric) had the appearance of a flat surface translating laterally behind a set of apertures. Responses during perception of the asymmetric three-dimensional structure contained larger negative components than did responses during perception of the symmetric three-dimensional structure. Control experiments suggest that the interpretation of depth structure is selected after junction information caused by the interplay between shading and object shape is extracted.
ISSN:0042-6989
1878-5646
DOI:10.1016/j.visres.2005.10.017