Figure 2: Visual cortical surface area mediates perceptual tradeoff. | Nature Communications

Figure 2: Visual cortical surface area mediates perceptual tradeoff.

From: Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation

Figure 2

(a) Orientation discrimination threshold and orientation contextual illusion magnitude were plotted against the retinotopically defined surface area of V1, illustrating that V1 surface area negatively correlated with orientation discrimination threshold and orientation contextual illusion magnitude across participants. (b) The discrimination threshold and contextual illusion magnitude of contrast or luminance perception were plotted against the V1 surface area, illustrating a lack of correlation between V1 surface area and perception of contrast or luminance. (c) The orientation discrimination threshold and orientation contextual illusion magnitude were plotted against the surface area of V2 or V3, illustrating a lack of correlation between V2 or V3 surface area and the orientation perception. Each point represents a single participant (N=20) and the line is the best-fitting linear regression. Statistical values reflect Spearman’s rho and its bootstrap confidence interval with FDR correction for multiple comparisons (α=0.025).

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