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Updated: Oct 17, 2026

Quantification of Visual Feature Selectivity of the Optokinetic Reflex in Mice
Published on: June 23, 2023
Dynamics of perceptual oscillations in form vision
H R Wilson1, B Krupa, F Wilkinson
1Visual Science Center, University of Chicago, 939 E. 57th Street, Chicago, Illinois 60637, USA. hrw6@midway.uchicago.edu
Abstract:
Certain periodic dot patterns (Marroquin patterns) generate a percept of dynamically oscillating circles, and analogous effects were explored by op artists in the 1960s. Here we show psychophysically that circles are perceived in these patterns only around specific points that are quantitatively predicted by a neural model of configural units hypothesized to reside in cortical area V4. Circles superimposed on the pattern mask perception of illusory circles. A neural model of lateral inhibitory interactions among V4 configural units showing spike-frequency adaptation quantitatively accounts for the human data. The model is consistent with ideas on the neural basis of attention in V4, and it suggests that attention may be biased via neuromodulation of slow hyperpolarizing potentials in cortical neurons.
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