Adaptive mechanisms facilitate robust performance in noise and in reverberation in an auditory categorization model.

ABSTRACT: For robust vocalization perception, the auditory system must generalize over variability in vocalization production as well as variability arising from the listening environment (e.g., noise and reverberation). We previously demonstrated using guinea pig and marmoset vocalizations that a hierarchical model generalized over production variability by detecting sparse intermediate-complexity features that are maximally informative about vocalization category from a dense spectrotemporal input representation. Here, we explore three biologically feasible model extensions to generalize over environmental variability: (1) training in degraded conditions, (2) adaptation to sound statistics in the spectrotemporal stage and (3) sensitivity adjustment at the feature detection stage. All mechanisms im

SUBMITTER: Parida S 

PROVIDER: S-EPMC10154343 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature