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The vestibular system of the owlFive owls were given vestibular examinations, and two of them were sacrificed to provide serial histological sections of the temporal bones. The owls exhibited a curious variability in the postrotatory head nystagmus following abrupt deceleration; sometimes a brisk nystagnus with direction opposite to that appropriate to the stimulus would occur promptly after deceleration. It was found also that owls can exhibit a remarkable head stability during angular movement of the body about any axis passing through the skull. The vestibular apparatus in the owl is larger than in man, and a prominent crista neglecta is present. The tectorial membrane, the cupula, and the otolithic membranes of the utricle, saccule, and lagena are all attached to surfaces in addition to the surfaces hearing hair cells. These attachments are very substantial in the utricular otolithic membrane and in the cupula.
Document ID
Document Type
Conference Paper
Money, K. E.
(Defence Research Establishment Toronto Downsview Ontario, Canada)
Correia, M. J.
(Defence Research Establishment Toronto Downsview Ontario, Canada)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: NASA, Washington Fifth Symp. on the Role of the Vestibular Organs in Space Exploration
Subject Category
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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