Journal article

Selective filtering to spurious localization cues in the mammalian auditory brainstem

Hamish Meffin, Benedikt Grothe

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | ACOUSTICAL SOC AMER AMER INST PHYSICS | Published : 2009

Abstract

The cues used by mammals to localize sound can become corrupted when multiple sound sources are present due to the interference of sound waves. Under such circumstances these localization cues become spurious and often fluctuate rapidly (>100 Hz). By contrast, rapid fluctuations in sound pressure level do not indicate a corrupted signal, but rather may convey important information about the sound source. It is proposed that filtering in the auditory brainstem acts to selectively attenuate signals associated with the presence of rapidly fluctuating (spurious) localization cues, but not those associated with slowly varying cues. Further it is proposed that specific inhibitory circuitry in the ..

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University of Melbourne Researchers