Paul Barry Hibbard

This study investigates whether facial expressions affect contrast sensitivity by testing visual contrast thresholds and effective contrast in fear versus other expressions.

The paper investigates perceptual learning and transfer in global motion tasks, finding that feedback is required for learning and that transfer is specific to low spatial frequency conditions.

The paper investigates factors affecting reversed depth perception in anti-correlated random dot stereograms, finding that gap size and stimulus design influence the reliability of depth detection mechanisms.

The paper shows that the decline in visual acuity with eccentricity is explained by the statistical properties of binocular natural scenes and their efficient coding in the visual cortex.