Abstract
An experimental procedure is described which consists of cutting the canal duct, inserting a micropipette and administering known volumetric displacements to the cupula. The cupula is made visible by dying the endolymph. Known displacements are administered to the cupula, and the time constant of the return to its equilibrium position is measured. With this information, the stiffness of the cupula is calculated. The experiment was successfully carried out on five White King pigeons. The mean stiffness found in somewhat less than other results reported in the literature, and reasons for this discrepancy are noted.
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Selected References
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- Aldred P., Hallpike C. S., Ledoux A. Observations on the osmotic pressure of the endolymph. J Physiol. 1940 Sep 14;98(4):446–453. doi: 10.1113/jphysiol.1940.sp003862. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Correia M. J., Landolt J. P. Spontaneous and driven responses from primary neurons of the anterior semicircular canal of the pigeon. Adv Otorhinolaryngol. 1973;19:134–148. doi: 10.1159/000393986. [DOI] [PubMed] [Google Scholar]
- MAYNE R. The dynamic characteristics of the semicircular canals. J Comp Physiol Psychol. 1950 Aug;43(4):309–319. doi: 10.1037/h0054827. [DOI] [PubMed] [Google Scholar]
- Money K. E., Bonen L., Beatty J. D., Kuehn L. A., Sokoloff M., Weaver R. S. Physical properties of fluids and structures of vestibular apparatus of the pigeon. Am J Physiol. 1971 Jan;220(1):140–147. doi: 10.1152/ajplegacy.1971.220.1.140. [DOI] [PubMed] [Google Scholar]
- Oman C. M., Young L. R. The physiological range of pressure difference and cupula deflections in the human semicircular canal. Theoretical considerations. Acta Otolaryngol. 1972 Nov;74(5):324–331. doi: 10.3109/00016487209128458. [DOI] [PubMed] [Google Scholar]
- VAN EGMOND A. A. J., GROEN J. J., JONGKEES L. B. W. The mechanics of the semicircular canal. J Physiol. 1949 Dec 15;110(1-2):1–17. doi: 10.1113/jphysiol.1949.sp004416. [DOI] [PMC free article] [PubMed] [Google Scholar]