Revisiting the functional significance of binocular cues for perceiving motion-in-depth.

ABSTRACT: Binocular differencing of spatial cues required for perceiving depth relationships is associated with decreased sensitivity to the corresponding retinal image displacements. However, binocular summation of contrast signals increases sensitivity. Here, we investigated this divergence in sensitivity by making direct neural measurements of responses to suprathreshold motion in human adults and 5-month-old infants using steady-state visually evoked potentials. Interocular differences in retinal image motion generated suppressed response functions and correspondingly elevated perceptual thresholds compared to motion matched between the two eyes. This suppression was of equal strength for horizontal and vertical motion and therefore not specific to the perception of motion-in-depth. Suppression

SUBMITTER: Kohler PJ 

PROVIDER: S-EPMC6115357 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature