Human-Like Modulation Sensitivity Emerging through Optimization to Natural Sound Recognition.

ABSTRACT: Natural sounds contain rich patterns of amplitude modulation (AM), which is one of the essential sound dimensions for auditory perception. The sensitivity of human hearing to AM measured by psychophysics takes diverse forms depending on the experimental conditions. Here, we address with a single framework the questions of why such patterns of AM sensitivity have emerged in the human auditory system and how they are realized by our neural mechanisms. Assuming that optimization for natural sound recognition has taken place during human evolution and development, we examined its effect on the formation of AM sensitivity by optimizing a computational model, specifically, a multilayer neural network, for natural sound (namely, everyday sounds and speech sounds) recognition and simulating psycho

SUBMITTER: Koumura T 

PROVIDER: S-EPMC10219008 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature