Studying Brain Circuit Function with Dynamic Causal Modeling for Optogenetic fMRI.

ABSTRACT: Defining the large-scale behavior of brain circuits with cell type specificity is a major goal of neuroscience. However, neuronal circuit diagrams typically draw upon anatomical and electrophysiological measurements acquired in isolation. Consequently, a dynamic and cell-type-specific connectivity map has never been constructed from simultaneous measurements across the brain. Here, we introduce dynamic causal modeling (DCM) for optogenetic fMRI experiments-which uniquely allow cell-type-specific, brain-wide functional measurements-to parameterize the causal relationships among regions of a distributed brain network with cell type specificity. Strikingly, when applied to the brain-wide basal ganglia-thalamocortical network, DCM accurately reproduced the empirically observed time series, and

SUBMITTER: Bernal-Casas D 

PROVIDER: S-EPMC5472443 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature