Dooling, R.J. and Walsh, J.K. (1976). Auditory evoked response correlates of hearing in the parakeet (Melopsittacus undulatus). Physiological Psychology, 4, 224-232.

Computer-averaged auditory evoked brain responses (EBRs) elicited by tones of different frequencies and intensities were recorded from surface electrodes on the skull of unanesthetized parakeets. The amplitude and latency of all prominent components of the response waveform were measured, and amplitude-intensity. and latency-intensity functions were determined using regression lines fitted by the method of least squares. A linear-log relation was apparent between response amplitude and stimulus intensity, and the slope of the amplitude-intensity function varied as a function of the frequency of the stimulating tone. A good correspondence was observed between the species' audibility curve as determined behaviorally and EBR estimates of absolute threshold.