抄録
Birds and mammals are known to be two phylogenic branches of warm-blooded and have many things in common as to their bilogical mechanisms. For the sake of aviation, birds are supposed to have bette communication system. Comparisons of function and morphology of the inner ear have been made between birds and mammals. The ABR was utilized as an indicator of audition of birds. Male parakeets were used. Daily intra-muscular injections of Kanamycin (100, 150 and 200mg/kg) were given and changes in ABR were observed. Hearing ability of the birds was disturbed in every case as judged from ABR. The ABR was more deeply affected by the size of daily dose rather than by the total dosage. Complete deafness was not brought about in these experiments. Changes in ABR were reversible in experiments of shorter duration.
