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- Title
Effect of otolith end organ ablation on horizontal optokinetic nystagmus, and optokinetic afternystagmus in the squirrel monkey.
- Authors
Takahashi, Masahiro; Igarashi, Makoto; Homick, Jerry L.; Takahashi, M; Igarashi, M; Homick, J L
- Abstract
Horizontal optokinetic nystagmus (OKN) and optokinetic afternystagmus (OKAN) (stimulus speed 0-200 degrees/sec with 1 degree/sec 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 and 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.
- Subjects
INNER ear physiology; INNER ear; ANIMAL experimentation; COMPARATIVE studies; ELECTRONYSTAGMOGRAPHY; EYE movements; RESEARCH methodology; MEDICAL cooperation; PRIMATES; RESEARCH; EVALUATION research; SURGERY
- Publication
ORL, 1977, Vol 39, Issue 2, p74
- ISSN
0301-1569
- Publication type
journal article
- DOI
10.1159/000275338