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. 2014 Feb 7;5:74. doi: 10.3389/fpsyg.2014.00074

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Copyright © 2014 Brewer and Barton.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Average measurements of percent variance explained for visual field maps in young and healthy aging subjects. (A) V1. (B) V2. (C) V3. (D) hV4. Blue lines represent data from healthy young subjects, and red lines represent data from healthy aging subjects. Each bar represents data measured in individual subjects and then averaged by eccentricity band across hemispheres. Variance explained percent is plotted as a function of degrees of eccentricity from 0 to 10° eccentricity (bins centered on 0.5–9.5°). Shaded gray regions indicate significant differences (p < 0.05) between regions (0–3°) in each map. Error bars indicate s.e.m.