Cortical Magnification Within Human Primary Visual Cortex Correlates with Acuity Thresholds

Overview

Journal Neuron

Publisher Cell Press

Specialty Neurology

Date 2003 May 27

PMID 12765616

Citations 179

Authors

Robert O Duncan

Geoffrey M Boynton

Affiliations

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Abstract

We measured linear cortical magnification factors in V1 with fMRI, and we measured visual acuity (Vernier and grating) in the same observers. The cortical representation of both Vernier and grating acuity thresholds in V1 was found to be roughly constant across all eccentricities. We also found a within-observer correlation between cortical magnification and Vernier acuity, further supporting claims that Vernier acuity is limited by cortical magnification in V1.

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