IMPORTANCE OF THE NON-AUDITORY RECEPTORS OF THE INNER EAR IN VISUALLY INDUCED NAUSEA AND SELF-VECTION

Authors
  1. Johnson, W.H.
  2. Sunahara, F.A.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Saint Michael's Hospital, Toronto ONT (CAN);Toronto Univ, Toronto ONT (CAN) Dept of Pharmacology
Abstract
The objective of this study was to determine the importance, if any, of the non-auditory labyrinth of the Inner Ear in visually induced nausea and self-vection in subjects exposed to a moving visual field with and without concomitant nodding head movements. Forty-two adult human subjects were used of whom were normal, some had unilateral labyrinthectomies while others had bilateral labyrinthectomies. The results indicate that self-vection can be more rapid in onset and strong in intensity when the visual effects are uncomplicated by labyrinthine influence of the Innear Ear. The results also suggest that vestibular stimulation induced by nodding head movements concomitant with a roating visual field enhances any nauseating effect if initiated to some degree by the latter alone.
Keywords
Inner ear;Labyrinthectomy
Date of publication
01 Jan 1994
Number of Pages
19
DSTKIM No
94-02724
CANDIS No
141432
Format(s):
Hardcopy;Originator's fiche received by DSIS

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