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引用次数: 0
摘要
本初步研究比较了婴儿豚鼠(48小时)和成年豚鼠(120天)对噪声影响的易感性。实验对象暴露于115 dB声压级(SPL)强度的窄频带噪声(中心频率4 kHz)中1小时。暴露后阈值通过条件抑制技术获得。结果表明，幼鼠的平均听力阈值为25 dB SPL，与成年鼠的平均听力阈值7.5 dB SPL有显著差异。
Auditory effects of noise on infant and adult guinea pigs.
This pilot study compared the susceptibility of the infant (48 hr) and adult (120 days) guinea pig to the effects of noise. Subjects were exposed to a narrow band of noise (center frequency 4 kHz) at an intensity of 115 dB sound pressure level (SPL) for 1 hr. Postexposure thresholds were obtained by a conditioned suppression technique. Results indicated that the infant animals displayed a mean hearing threshold of 25 dB SPL that significantly differed from the adult mean threshold of 7.5 dB SPL.
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