Stereothresholds during Voluntary Head Movement and Disconjugate Image Motion.

ABSTRACT:

Significance

Stereothresholds increase in the presence of disconjugate image motion, whether this motion results from vergence errors that occur during active head movements or is imposed externally.

Purpose

During rapid voluntary oscillations of the head, vergence eye position has been reported to vary with a peak-to-peak amplitude of about 0.5°-a considerably greater amplitude than when the head is still. Concurrently, stereopsis was reported to be unaffected by voluntary head motion. In the present study, we measured stereothresholds during voluntary side-to-side head movements and during imposed disconjugate image motion with the head stationary, to simulate that produced during active head movement.

Methods

Stereothresholds were measured for a pair of 30-arcmin b

SUBMITTER: Bedell HE 

PROVIDER: S-EPMC8720073 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature