Cyclovergence evoked by up-down acceleration along longitudinal axis in humans

Progress in Brain Research
I OlasagastiD Straumann

Abstract

We present results of a study of torsional eye movements evoked by earth-vertical accelerations along the subject's longitudinal axis. The earth-vertical stimulus leads to a gravito-inertial acceleration vector that changes magnitude but not direction. It can therefore be viewed as a dynamic change of the gravity level. Up-down oscillations induced relatively symmetric cyclovergence (0.6-2.2 degrees peak-to-peak). Eyes intorted/extorted for higher/lower effective gravity. The phase of this modulation was small relative to chair acceleration. We contrast this behaviour to the dynamics of cycloversion in response to interaural acceleration, which shows a considerably larger phase lag. This strikingly different dynamics suggest a different processing of otolith signals during interaural and longitudinal stimulation.

References

Jul 1, 1996·Experimental Brain Research·D M MerfeldL R Young
Jan 1, 1996·Brain Research Bulletin·B De GraafE Groen
Jun 18, 1999·Annals of the New York Academy of Sciences·H G MacDougallG M Halmagyi
Oct 11, 2007·Experimental Brain Research·Jun MarutaBernard Cohen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.

Related Papers

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
I OlasagastiD Straumann
Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
Akira TakabayashiS Mori
© 2022 Meta ULC. All rights reserved