A biologically plausible model of human radial frequency perception

Vision Research
Frédéric J A M Poirier, Hugh R Wilson

Abstract

Several recent studies have used radial frequency patterns to investigate intermediate-level shape perception, a critical precursor to object recognition. Here, we developed the first neural model of RF perception based on known V4 properties that exhibits many of the characteristics of human RF perception. The model is composed of two main parts: (1) recovery of object position using large-scale non-Fourier V4-like concentric units that respond at the center of concentric contour segments across orientations, and (2) curvature detectors that encode local shape information. Each curvature mechanism combines multiplicatively the responses of three oriented filters, the positions and orientation preferences of which determine the curvature mechanism's tuning properties for position, orientation, and degree of curvature. When responding to RF patterns, peak responses occur at points of maximum curvature. Shape is represented as curvature responses as a function of orientation around the object center, and the cross-correlation of that function with a sine wave peaks when the frequency of the sine wave matches the number of peaks in the stimulus. Cross-correlation strength can be used to model human performance. Model and human per...Continue Reading

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Citations

Feb 3, 2012·Cerebral Cortex·Jeffrey M YauCharles E Connor
Nov 26, 2010·The European Journal of Neuroscience·Minami Ito, Naokazu Goda
Jul 8, 2009·Vision Research·Jason BellDavid R Badcock
Jun 28, 2011·Vision Research·Jason BellFrederick A A Kingdom
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Mar 12, 2009·Vision Research·Jason Bell, David R Badcock
Apr 21, 2009·Vision Research·Elena GheorghiuLavanya Sampasivam
Apr 21, 2009·Vision Research·Jason Bell, Fredrick A A Kingdom
Dec 2, 2009·Vision Research·J Edwin Dickinson, David R Badcock
Aug 5, 2008·Vision Research·Jason BellDavid R Badcock
Aug 16, 2008·Vision Research·Jason Bell, David R Badcock
Feb 13, 2007·Vision Research·Elena Gheorghiu, Frederick A A Kingdom
Sep 25, 2007·Vision Research·Frédéric J A M Poirier, Hugh R Wilson
Mar 11, 2015·Frontiers in Human Neuroscience·Lars StrotherGideon P Caplovitz
Mar 16, 2016·Vision Research·Alex S BaldwinRobert F Hess
Dec 6, 2017·I-Perception·Kohske Takahashi
Jun 16, 2018·Journal of Vision·Robert J GreenDavid R Badcock
Jun 16, 2018·Journal of Vision·Robert J GreenDavid R Badcock
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Nov 6, 2018·Vision Research·Michael SlugockiPatrick J Bennett
Dec 10, 2019·Vision Research·Victoria S Y WongDavid R Badcock
Sep 3, 2021·Journal of Vision·J Edwin DickinsonDavid R Badcock

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