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© Research
Publication : eLife

Context-dependent signaling of coincident auditory and visual events in primary visual cortex.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in eLife - 23 May 2019

Deneux T, Harrell ER, Kempf A, Ceballo S, Filipchuk A, Bathellier B,

Link to Pubmed [PMID] – 31115334

Link to DOI – 10.7554/eLife.44006e44006

Elife 2019 05; 8():

Detecting rapid, coincident changes across sensory modalities is essential for recognition of sudden threats or events. Using two-photon calcium imaging in identified cell types in awake, head-fixed mice, we show that, among the basic features of a sound envelope, loud sound onsets are a dominant feature coded by the auditory cortex neurons projecting to primary visual cortex (V1). In V1, a small number of layer 1 interneurons gates this cross-modal information flow in a context-dependent manner. In dark conditions, auditory cortex inputs lead to suppression of the V1 population. However, when sound input coincides with a visual stimulus, visual responses are boosted in V1, most strongly after loud sound onsets. Thus, a dynamic, asymmetric circuit connecting AC and V1 contributes to the encoding of visual events that are coincident with sounds.

https://pubmed.ncbi.nlm.nih.gov/31115334