Accession Number:

AD0620362

Title:

INTERACTION OF VESTIBULAR STIMULI OF DIFFERENT MAGNITUDES AND OPPOSITE DIRECTIONS. PART I. PERCEPTION OF VISUAL APPARENT MOTION DURING ANGULAR ACCELERATIONS.

Descriptive Note:

Research rept.,

Corporate Author:

TULANE UNIV NEW ORLEANS LA

Personal Author(s):

Report Date:

1954-12-08

Pagination or Media Count:

17.0

Abstract:

Normal head movements involve positive angular accelerations followed immediately by negative angular accelerations. The cupula-endolymph system of the semicircular canal in man may be assumed to respond to angular acceleration in the manner of a heavily-damped torsion pendulum. In this study, three subjects were accelerated to a predetermined level and then braked to a stop to produce positive and negative angular accelerations in quick succession. They reported on the direction and duration of apparent motion of a visual target oculogyral illusion. The obtained data were fitted by theoretical equations which were derived from the standard differential equation for a torsion pendulum. The correspondence between theoretical and experimental data was satisfactory and these experiments tend to confirm the validity of the torsion pendulum analogy for semicircular canal function. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE