TY  - INPR
A1  - López Jury, Luciana
A1  - García Rosales, Francisco
A1  - González Palomares, Eugenia
A1  - Kössl, Manfred
A1  - Hechavarria-Cueria, Julio C.
T1  - Acoustic context modulates natural sound discrimination in auditory cortex through frequency specific adaptation
T2  - bioRxiv
N2  - Vocal communication is essential to coordinate social interactions in mammals and it requires a fine discrimination of communication sounds. Auditory neurons can exhibit selectivity for specific calls, but how it is affected by preceding sounds is still debated. We tackled this using ethologically relevant vocalizations in a highly vocal mammalian species: Seba’s short-tailed bat. We show that cortical neurons present several degrees of selectivity for echolocation and distress calls. Embedding vocalizations within natural acoustic streams leads to stimulus-specific suppression of neuronal responses that changes sound selectivity in disparate manners: increases in neurons with poor discriminability in silence and decreases in neurons selective in silent settings. A computational model indicates that the observed effects arise from two forms of adaptation: presynaptic frequency specific adaptation acting in cortical inputs and stimulus unspecific postsynaptic adaptation. These results shed light into how acoustic context modulates natural sound discriminability in the mammalian cortex.
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/72872
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-728722
IS  - 2021.02.08.430293
ER  -