Spectral-temporal processing of naturalistic sounds in monkeys and humans
Robert F. van der Willigen, Huib Versnel, A. John Van Opstal
Abstract
We provide comparative data on primate audition of naturalistic sounds comprising hearing thresholds, reaction time distributions, and spectral-temporal modulation transfer functions. Our psychophysical experiments demonstrate that auditory information is primarily processed in a spectral-temporal-independent manner by both monkeys and humans. Singular value decomposition of known visual spatiotemporal contrast sensitivity, in comparison to our auditory spectral-temporal sensitivity, revealed a striking contrast in how the brain encodes natural sounds as opposed to natural images, as vision appears to be space-time inseparable.
Topics & Concepts
Modulation (music)Frequency modulationPrimateNatural soundsMacaqueSpeech recognitionPsychologyCommunicationComputer scienceAcousticsPhysicsNeuroscienceBandwidth (computing)Computer networkHearing Loss and RehabilitationMultisensory perception and integrationNoise Effects and Management