Chonnam Med J.
1995 Dec;31(2):165-174.
Oculomotor response to stimulation of the superior semicircular canal nerve in cats
- Affiliations
-
- 1Department of Physiology, Chonnam National University Medical School, Kwangju, Korea.
Abstract
- In urethane anesthetized cats the superior semicircular canal was selectively stimulated and the electromyographic activities of the extraocular muscles were recorded, and functional interrelationships between the anterior canal and the extraocular muscles were figured out as follows: 1) Stimulation of a unilateral canal nerve caused excitation of the supero-medial muscle group (the superior oblique, superior rectus and medial rectus) and inhibition of the inferolateral group (the inferior oblique, inferior rectus and lateral rectus) in the ipsilateral eye. 2) In the contralateral eye, responses of the extraocular muscles were reversed; excitation of the infero-lateral group and inhibition of the supero-medial group were evoked by stimulation of the same superior canal nerve. Comparison between the experimental results of this functional study and those of the morphological study reported by Carpenter and his associates revealed considerable similarities in the canal-EOM relationship except a few instances.
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- Reflex responses of the superior rectus and splenius capitis muscles to stimulation of superior semicircular canal nerve in cats
- Responses of Neck Muscles to Horizontal Semicircular Canal Excitation in Cats
- Reflex Actions of the Anterior Semicircular Canals on the Clavotrapezius and Extraocular Horizontal Rectus Muscles in Cats
- Reflex actions of the semicircular canals on the clavotrapezius muscle in cats
- Reflex Actions of the Semicircular Canals on the Rectus Capitis Anterior Major and the Rectus Capitis Posterior Major Muscles in Cats
