Spatiotemporal dynamics of information encoding revealed in orbitofrontal high-gamma.

ABSTRACT: High-gamma signals mirror the tuning and temporal profiles of neurons near a recording electrode in sensory and motor areas. These frequencies appear to aggregate local neuronal activity, but it is unclear how this relationship affects information encoding in high-gamma activity (HGA) in cortical areas where neurons are heterogeneous in selectivity and temporal responses, and are not functionally clustered. Here we report that populations of neurons and HGA recorded from the orbitofrontal cortex (OFC) encode similar information, although there is little correspondence between signals recorded by the same electrode. HGA appears to aggregate heterogeneous neuron activity, such that the spiking of a single cell corresponds to only small increases in HGA. Interestingly, large-scale spatiotempo

SUBMITTER: Rich EL 

PROVIDER: S-EPMC5658402 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature