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KMID : 0376219840210040963
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Chonnam Medical Journal
1984 Volume.21 No. 4 p.963 ~ p.967
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Effects of High Frequency Pure tone on the Hair cells of the Organ of Corti
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Abstract
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An exposure to excessive noise is known to cause hair cell damages in the organ of Corti. In order to investigate the effect of high frequency noise on the morphology of the hair cell nuclei in the receptor organ of cochlea, cytological observation was carried out on the hair cells following exposure to 6KHz, 100dB for 48hours.
Morphological changes such as irregularly arranged pyknotic nuclei, swollen nuclei or karyolytic nuclei of the outer hair cells were noted. The changes were prominent on the second turn and the upper part of the basal turn of the organ of Corti, and in the order of the third turn and the apical turn. The changes were more prominent in the outer hair cells than in the inner hair cells.
These results indicate that an exposure to high frequency pure tone on the hair cells produces significant morphological changes mainly on the receptor organ of the second turn and the upper part of the basal turn.
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