Experimental Studies on the mechanisms of Infant Utterance using Mynah Birds -Effect of Audiory Feedback-

1.当奖励给幼鸟的时候，这种叽叽喳喳的休假持续了一段时间。如果动物被提供了惩罚，bbling-like的消失和模仿是不完整的。八哥发声的发育过程与幼鸟相似.虽然鸟类对噪声的耐受性较强，但采用运动手枪爆炸法进行试验，取得了满意的效果.爆炸声可造成内耳的声损伤，但不能证实突跳反馈对八哥模仿发声的影响，也不能证实模仿发声的改变.为了检测暂时性噪声性听力损失的形成和恢复，记录脑干听觉诱发电位，并确定其效率作为听力损失的指标.实验证明，操作行为法测得的人耳可听度曲线包括0.1 ~ 15.0kHz的频带。

1. The babbling-lide vacalizations continued for some time, when the rewards were given to young birds. If the animal is provided with the punishuments, the bbling-like ones disappeared and the mimicry was not complete. Developmental process of mynah vocalization were similar to infant ones.2. Though the noids tolerance was heavy in birds, explosion of the athletic pistol was employed with satisfactory results.3. Acoustic trauma of inner ear by explosion could be formed, but the existence of effect of the suditory feedback on mynah's mimic vocalizations was not confirmed ; a change of imitaive utternces could not be observed.4. In order to examine a formation and its recovery of temporary noise-induced hearing loss, the brainstem auditory evoked potentials were recorded and its efficiency was confirmed as the index of hearing loss.5. It was proved that the audibility curves by the operant behavior method include the frequency bands from 0.1 to 15.0 kHz.