NOIROT, I. C., BRITTAN-POWELL, E. F., & DOOLING, R. J. (2011). Masked auditory thresholds in three species of birds, as measured by the auditory brainstem response (L). Acoustical Society of America, 129, 6, 3445-3448.
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.