Hierarchical encoding of natural sound mixtures in ferret auditory cortex.

ABSTRACT: Extracting relevant auditory signals from complex natural scenes is a fundamental challenge for the auditory system. Sounds from multiple sources overlap in time and frequency. In particular, dynamic 'foreground' sounds are often masked by more stationary 'background' sounds. Human auditory cortex exhibits a hierarchical organization where background-invariant representations are progressively enhanced along the processing stream, from primary to non-primary regions. However, we do not know whether this organizational principle is conserved across species and which neural mechanisms drive this invariance. To address these questions, we investigated background invariance in ferret auditory cortex using functional ultrasound imaging, which enables large-scale, high-resolution recordings of h

SUBMITTER: Landemard A 

PROVIDER: S-EPMC12456947 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature