Direct electrophysiological measurement of human default network areas

Direct electrophysiological measurement of human default network areas.

Neuroimaging-based investigations in humans have established the existence of brain regions that are selectively metabolically active while resting. We report a population-scale neurophysiological measurement of activity in regions of this "default network," by recording high-frequency power (76-200 Hz) electrical potentials directly from these regions in three human subjects. A selective incre...

The electrophysiological basis of negative BOLD in default mode network

Introduction: The default mode network (DMN) [1], which includes medial prefrontal cortex (MPFC), posterior cingulate cortex (PCC), precuneus and the left and right inferior parietal lobules (IPLs), has been widely investigated using fMRI. The network is characterised by high intrinsic correlation between BOLD signals measured at separate network nodes in the resting state, implying functional ...

Reentrant Information Flow in Electrophysiological Rat Default Mode Network

Functional MRI (fMRI) studies have demonstrated that the rodent brain shows a default mode network (DMN) activity similar to that in humans, offering a potential preclinical model both for physiological and pathophysiological studies. However, the neuronal mechanism underlying rodent DMN remains poorly understood. Here, we used electrophysiological data to analyze the power spectrum and estimat...

Direct electrophysiological measurement of attentional templates in visual working memory.

Exploring the Electrophysiological Correlates of the Default-Mode Network with Intracerebral EEG

While functional imaging studies allow for a precise spatial characterization of resting state networks, their neural correlates and thereby their fine-scale temporal dynamics remain elusive. A full understanding of the mechanisms at play requires input from electrophysiological studies. Here, we discuss human and non-human primate electrophysiological data that explore the neural correlates of...