Optokinetic drum
id:
optokinetic-drum-235-8980995
title:
Optokinetic drum
text:
An optokinetic drum—also called catford drum—is a rotating instrument to test vision in which individuals are seated facing the wall of the drum. The interior surface of the drum is normally striped; thus, as the drum rotates, the subject's eyes are subject to a moving visual field while the subject remains stationary, this phenomenon is called optokinetic nystagmus. The speed of the drum and the duration of the test may be varied. Control groups are placed in a drum without stripes or rotation.
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Optokinetic_drum
date created:
date modified:
2023-10-09T04:22:54Z
main entity:
{"identifier":"Q7099055","url":"https://www.wikidata.org/entity/Q7099055"}
image:
fields total:
13
integrity:
13