BBI Special Seminar: Matteo Carandini, Brain networks for engagement, vision, choice, and action

Thursday, June 13, 2019
11:00 a.m.
1103 Bioscience Research Building

Brain networks for engagement, vision, choice, and action

Matteo Carandini
GlaxoSmithKline/Fight for Sight Professor of Visual Neuroscience
Institute of Ophthalmology, Faculty of Brain Sciences
University College London

Abstract
Behavior arises from neuronal activity, but it is not known whether the active neurons are concentrated in a few brain regions or distributed across many regions. We trained mice to report decisions about visual stimuli, and used high-density probes to record from >30,000 neurons across 42 brain regions. Task engagement could be predicted by a characteristic pattern of activity in a set of brain regions. During engagement, visual signals starting in the visual pathway invaded a wide set of brain regions. A majority of neurons in nearly all brain regions responded at the time of action. However, neurons encoding choice prior to action were rare and inhabited only a few regions of forebrain and midbrain. These results reveal computations performed by neuronal populations distributed across the brain, and define distinct brain-wide networks supporting engagement, vision, choice, and action.

Biography
Matteo Carandini received a Laurea in Mathematics from the Universita` di Roma (1990) and a PhD in Neural Science from New York University (1996). After postdoctoral fellowships at Northwestern University and New York University, he established a laboratory at the Swiss Federal Institute of Technology in Zurich (1998). He then moved the laboratory to the Smith-Kettlewell Eye Research Institute in San Francisco (2002) and finally to UCL (2007). His work aims to understand how the brain processes sensory signals, and integrates them with internal signals to guide decision and action. The goal is to understand these processes at the level of large populations of individual neurons.

 

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