Effect of Otolith End Organ Ablation on Horizontal Optokinetic Nystagmus, and Optokinetic Afternystagmus in the Squirrel Monkey
- 1 January 1977
- journal article
- research article
- Published by S. Karger AG in ORL
- Vol. 39 (2) , 74-81
- https://doi.org/10.1159/000275338
Abstract
Horizontal optokinetic nystagmus (OKN) and optokinetic afternystagmus (OKAN) (stimulus speed 0–200°/sec with 1°/sec2 constant angular acceleration) were examined before and after utriculo-sacculectomy (bilateral, two-stage) in squirrel monkeys. OKN exhibited a slight decline only after bilateral otolith end organ ablations. OKAN showed a minimal decline after unilateral operation but no change after bilateral operations. Severe OKN reduction and disappearance of OKAN after bilateral labyrinthectomy in primates should basically reflect the elimination of inputs from the cristae ampullares, and not from the maculae.Keywords
This publication has 1 reference indexed in Scilit:
- Defects in Optokinetic Afternystagmus in Lesions of the Brain StemAmerican Journal of Physiology-Legacy Content, 1958