Asymmetries in the discrimination of motion direction around the visual field.

ABSTRACT: The discriminability of motion direction is asymmetric, with some motion directions that are better discriminated than others. For example, discrimination of directions near the cardinal axes (upward/downward/leftward/rightward) tends to be better than oblique directions. Here, we tested discriminability for multiple motion directions at multiple polar angle locations. We found three systematic asymmetries. First, we found a large cardinal advantage in a cartesian reference frame - better discriminability for motion near cardinal reference directions than oblique directions. Second, we found a moderate cardinal advantage in a polar reference frame - better discriminability for motion near radial (inward/outward) and tangential (clockwise/counterclockwise) reference directions than other di

SUBMITTER: Ezzo R 

PROVIDER: S-EPMC10068874 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature