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[Preprint]. 2023 Jul 11:2023.07.10.548431. [Version 1] doi: 10.1101/2023.07.10.548431

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Figure 3: — Segmentation thresholds for density-defined and feature-defined boundaries.

(a) Illustration of the orientation identification task. Compound feature-defined and density-defined boundaries having varying degrees of visibility were presented with a left-oblique or right-oblique orientation.

(b) Psychometric functions for observers segmenting compound feature-defined boundaries (blue symbols + curves), compound density-defined boundaries (red symbols + curves), and RMS-equated compound density-defined boundaries (magenta symbols + curves). Here the constituent single-micropattern density boundaries were comprised of ON- and OFF-center DOG functions (Fig 2b).

(c) Same as (b) but for compound feature- and density-defined compound boundaries comprised of horizontal (H) and vertical (V) Gabor micropatterns (Fig. 2c).