Brice Bathellier

30 mars 2018

Unit for Neuroscience, Information and Complexity (UNIC), Team "Cortical Dynamics and multisensory processing", CNRS, Gif-sur-Yvette

Complex uni- and multisensory representations in mouse auditory and visual cortex

invité par Ivo Vanzetta


Unit for Neuroscience, Information and Complexity (UNIC), Team "Cortical Dynamics and multisensory processing", CNRS, Gif-sur-Yvette

Complex uni- and multisensory representations in mouse auditory and visual cortex

Abstract : My group is interested in the computational principles by which neural assemblies in mouse auditory cortex produce the complex representations necessary for natural auditory perception. We are also studying in the interplay between auditory and visual processing in primary sensory cortex. To investigate these questions we use large scale two-photon imaging and optogenetics techniques in mouse cortex as well as computational modelling and behaviour. One specificity of audition is the tremendous importance of temporal features (intensity and frequency variations in time) for recognition of sounds. In this presentation, I will show that auditory cortex responds to temporal variations of sounds in a very nonlinear manner, helping to build divergent representations of sounds that differ only by their time course. In addition, I will discuss new optogenetics experiments assessing necessity and sufficiency of auditory cortex in learning and performance of sound discriminations as well as new results indicating that specific information about sound intensity variations is transmitted to visual cortex to signal coincidence of sound onsets with visual events.

invité par Ivo Vanzetta

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