Title
Saccular impact on ocular torsion
Author
de Graaf, B.
Bos, J.E.
Groen, E.L.
TNO Technische Menskunde
Publication year
1996
Abstract
When someone is tilted laterally the sheer force on the maculae of the utriculus and the sacculus is described by the sine and the cosine of the angle of tilt, respectively. So both the sacculus and the utriculus are stimulated, but in the litera-ture ocular torsion is normally attributed to utricular function alone (and thus seen as a response to y-axis linear acceleration). However, on the base of a series of experiments on a tilt chair, a linear track, human centrifuges, and during parabolic flights, we conclude that the sacculus contribu-tes to ocular torsion as well (there is a response to z-axis linear acceleration). The data suggest that the ratio of the utricular and saccular impact on ocular torsion is 3:1. The utriculus generates conjugate and the sacculus disjunctive torsional eye movements.
Subject
Biology
Linear acceleration
Ocular torsion
Sacculus
acceleration
centrifuge
conference paper
eye movement
human
normal human
priority journal
sacculus
tilting
torsion
utricle
Adult
Humans
Kinetics
Male
Ocular Physiology
Rotation
Saccades
Torsion
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DOI
https://doi.org/10.1016/0361-9230(96)00126-8
TNO identifier
8607
Source
Brain Research Bulletin, 40 (5-6), 321-326
Document type
article