The presence and distribution of acid phosphatase in the organ of corti in animals in a state of relative rest and upon auditory stimulation
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A spiral gradient of the distribution of acid phosphatase was discovered in the structural elements of the organ of Corti in animals which were in condition of relative rest.
Low concentration of the enzyme was found in the superior (first) convolution of the cochlea.
Its quantity gradually increases in the medial (second) convolution while the highest concentration is revealed in the inferior (third) convolution of the cochlea. Stimulation of animals by sounds of high frequency (1500 cps, 95 decibels) for one hour causes a decrease of the concentration of acid phosphatase in the hair cells of the inferior convolution of the cochlea. Stimulation by sounds of low frequency (300 cps, 95 decibels) on the contrary, causes a decrease in concentration of the acid phosphatase in the cells of the superior convolution. However, stimulation by sound makes the concentration of acid phosphatase more elective in certain neurones of the eighth ganglion, as well as in the nerve fibers of the internal and external spiral network of the organ of Corti.
KeywordsPublic Health Nerve Fiber Hair Cell Acid Phosphatase Corti
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