Psychophysical receptive fields of edge detection mechanisms
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Updated: Aug 26, 2026

Topographical Estimation of Visual Population Receptive Fields by fMRI
Published on: February 3, 2015
1Centre for Vision Research, York University, 4700 Keele Street, North York, Toronto, Ont, Canada M3J 1P3. jelder@yorku.ca
Abstract:
Theories of edge detection generally assume a front-end linear stage involving some population of neural filters. Here we study these early mechanisms using psychophysical techniques, and evaluate a number of models for edge detection. We measured psychophysical efficiency for detection of noisy luminance edge stimuli over a range of stimulus sizes and shapes. The data suggest a diversity in receptive field shape and orientation bandwidth, consistent with physiological evidence, but inconsistent with standard multi-channel models of visual processing.
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