Free-field binaural unmasking in budgerigars (Melopsittacus undulatus)

Behavioral Neuroscience
Micheal L DentR J Dooling

Abstract

The detection of signals in noise is important for understanding both the mechanisms of hearing and how the auditory system functions under more natural conditions. In humans, the auditory system gains some improvement if the signal and noise are separated in space (binaural masking release). Birds with small heads are at a disadvantage in separating noise and signal sources relative to large mammals, because interaural time differences are much smaller. Two binaural phenomena in budgerigars related to the detection of tones in noise were examined. Budgerigars show 8 dB of free-field binaural masking release when signal and noise are presented to their right side and correlated noise is presented to their left side. Budgerigars also show a spatial masking release of 9 dB when a signal and noise are separated in azimuth by 90 degrees. These results are similar to those found in humans and other mammals with much larger heads.

Citations

Aug 30, 2008·Journal of Comparative Psychology·Mark A Bee, Christophe Micheyl
Jan 17, 2012·Journal of the Association for Research in Otolaryngology : JARO·Andrea LingnerBenedikt Grothe
Jan 10, 2013·The Journal of the Acoustical Society of America·Jennifer K BizleyJan W H Schnupp
May 27, 2003·The Journal of the Acoustical Society of America·Brian S Nelson
Mar 30, 2000·The Journal of the Acoustical Society of America·M R LeekR J Dooling
Apr 6, 2007·The Journal of the Acoustical Society of America·Kenneth Kragh Jensen
Feb 6, 2008·The Journal of the Acoustical Society of America·Micheal L DentThomas E Welch
Apr 22, 2003·The Journal of the Acoustical Society of America·Micheal L Dent, Robert J Dooling
Feb 8, 2002·The Journal of the Acoustical Society of America·Ling ZhengLaurel H Carney
Jul 14, 2010·The European Journal of Neuroscience·Ali AsadollahiHermann Wagner
Mar 6, 2009·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Susan SümerHans-Ulrich Schnitzler
Feb 7, 2001·Annual Review of Psychology·A S Feng, R Ratnam
Mar 5, 2016·The Journal of the Acoustical Society of America·Micheal L DentErikson G Neilans
Jun 30, 2001·Journal of Neurophysiology·S Furukawa, J C Middlebrooks
Oct 23, 2004·The Journal of Experimental Biology·Brian S Nelson, Roderick A Suthers
May 5, 2021·The Journal of the Acoustical Society of America·A M von Benda-BeckmannP J O Miller

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