Spectrotemporal modulation provides a unifying framework for auditory cortical asymmetries.

ABSTRACT: The principles underlying functional asymmetries in cortex remain debated. For example, it is accepted that speech is processed bilaterally in auditory cortex, but a left hemisphere dominance emerges when the input is interpreted linguistically. The mechanisms, however, are contested, such as what sound features or processing principles underlie laterality. Recent findings across species (humans, canines and bats) provide converging evidence that spectrotemporal sound features drive asymmetrical responses. Typically, accounts invoke models wherein the hemispheres differ in time-frequency resolution or integration window size. We develop a framework that builds on and unifies prevailing models, using spectrotemporal modulation space. Using signal processing techniques motivated by neural re

SUBMITTER: Flinker A 

PROVIDER: S-EPMC6650286 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature