Department of Psychology, University of Maryland, College Park, Maryland 20742, USA.
J Acoust Soc Am. 2011 Jun;129(6):3445-8. doi: 10.1121/1.3578452.
Auditory brainstem responses (ABRs) were recorded in adult budgerigars, canaries, and zebra finches in quiet and in three levels of white noise for tone stimuli between 1 and 4 kHz. Similar to behavioral results, masked ABR thresholds increased linearly with increasing noise levels. When the three species are considered together, ABR-derived CRs were higher than behavioral CRs by 18-23 dB between 2 and 4 kHz and by about 30 dB at 1 kHz. This study clarifies the utility of using ABRs for estimating masked auditory thresholds in natural environmental noises in species that cannot be tested behaviorally.
听觉脑干反应(ABR)在安静和三种白噪声水平下被记录在成年虎皮鹦鹉、金丝雀和斑马雀中,用于 1 至 4 kHz 之间的音调刺激。与行为结果相似,掩蔽 ABR 阈值随噪声水平的增加呈线性增加。当这三个物种一起考虑时,在 2 至 4 kHz 之间,ABR 衍生的 CR 比行为 CR 高 18-23 dB,在 1 kHz 时约高 30 dB。这项研究澄清了在无法进行行为测试的物种中,使用 ABR 来估计自然环境噪声中的掩蔽听觉阈值的效用。