Forward masking enhances the auditory brainstem response in the free-tailed bat, Tadarida brasiliensis, during a critical time window for sonar reception. Academic Article uri icon


  • Forward masking is a widespread auditory phenomenon in which the response to one sound transiently reduces the response to a succeeding sound. This study used auditory brainstem responses to measure temporal masking effects in the free-tailed bat, Tadarida brasiliensis. A digital subtraction protocol was used to isolate responses to the second of a pair of pulses varying in interval, revealing a suppression phase lasting <4ms followed by an enhancement phase lasting 4-15ms during which the ABR waveform was amplified up to 100%. The results suggest echolocating bats possess adaptations for enhancing sonar receiver gain shortly after pulse emission.

published proceedings

  • J Acoust Soc Am

altmetric score

  • 2.1

author list (cited authors)

  • Smotherman, M., & Bakshi, K.

citation count

  • 7

complete list of authors

  • Smotherman, Michael||Bakshi, Kushal

publication date

  • January 2019