抄録
To produce a precise damage of the inner or outer hair-cells in the cochlea of guinea pigs, the Nd-YAG laser was applied. Prior to the animal experiments, following items were examined. 1) The grade of penetration of Nd-YAG laser through bony wall. 2) The temperature of laser irradiation at the forcused portion in aqua. The Nd-YAG laser of the adequate power and time determined by the results of these basic experiments was irradiated to the cochlea. The precisely localized area produced by the laser irradiation was detected on the surface preparation of the organ of Corti. This method may be interested for both physiological experiment and clinical micro surgery in cochlea.
