Dmitrieva L P, Gottlieb G
Psychology Department, University of North Carolina at Greensboro 27412.
Behav Neural Biol. 1994 Jan;61(1):19-28. doi: 10.1016/s0163-1047(05)80040-8.
The development of brain stem auditory-evoked potentials (BAEP) was studied in devocalized ducklings reared in auditory isolation and in vocal ducklings exposed to enhanced species-specific auditory stimulation with embryonic contact-contentment calls (CTs). Thresholds and latency of BAEP wave P1 in the mute ducklings indicated that even short-term auditory deprivation affected the development of auditory sensitivity, substantially reducing the rate of decline in BAEP thresholds and latencies of P1, especially in the low-frequency (500 and 750 Hz) and high-frequency (above 2.0 kHz) ranges. The ducklings exposed to enhanced stimulation, on the other hand, showed an accelerated decline in BAEP thresholds and latencies of P1 across all test frequencies, with the most marked influence on low (below 1.5 kHz) and high (above 2.5 kHz) frequencies. The influence of species-specific auditory experience had its most potent effect during the embryonic critical period for postnatal auditory perceptual (behavioral) development, at which time the embryo produces and hears a special low-frequency (1.5-2.5 kHz) version of its own contact-contentment vocalization.
研究了在听觉隔离环境中饲养的去声小鸭以及暴露于具有胚胎期接触满足叫声（CTs）的增强型物种特异性听觉刺激下的有声小鸭的脑干听觉诱发电位（BAEP）的发育情况。哑小鸭中BAEP波P1的阈值和潜伏期表明，即使是短期的听觉剥夺也会影响听觉敏感性的发育，显著降低BAEP阈值和P1潜伏期的下降速率，尤其是在低频（500和750赫兹）和高频（2.0千赫兹以上）范围内。另一方面，暴露于增强刺激下的小鸭在所有测试频率下BAEP阈值和P1潜伏期的下降加速，对低频（低于1.5千赫兹）和高频（高于2.5千赫兹）的影响最为明显。物种特异性听觉经验的影响在出生后听觉感知（行为）发育的胚胎关键期最为显著，此时胚胎会发出并听到其自身接触满足叫声的特殊低频（1.5 - 2.5千赫兹）版本。
