Enhanced representation of natural sound sequences in the ventral auditory midbrain.

ABSTRACT: The auditory midbrain (inferior colliculus, IC) plays an important role in sound processing, acting as hub for acoustic information extraction and for the implementation of fast audio-motor behaviors. IC neurons are topographically organized according to their sound frequency preference: dorsal IC regions encode low frequencies while ventral areas respond best to high frequencies, a type of sensory map defined as tonotopy. Tonotopic maps have been studied extensively using artificial stimuli (pure tones) but our knowledge of how these maps represent information about sequences of natural, spectro-temporally rich sounds is sparse. We studied this question by conducting simultaneous extracellular recordings across IC depths in awake bats (Carollia perspicillata) that listened to sequences of

SUBMITTER: Gonzalez-Palomares E 

PROVIDER: S-EPMC7817570 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature