Beta EEG reflects sensory processing in active wakefulness and homeostatic sleep drive in quiet wakefulness.

ABSTRACT: Markers of sleep drive (<10 Hz; slow-wave activity and theta) have been identified in the course of slow-wave sleep and wakefulness. So far, higher frequencies in the waking electroencephalogram have not been examined thoroughly as a function of sleep drive. Here, electroencephalogram dynamics were measured in epochs of active wake (wake characterized by high muscle tone) or quiet wake (wake characterized by low muscle tone). It was hypothesized that the higher beta oscillations (15-35 Hz, measured by local field potential and electroencephalography) represent fundamentally different processes in active wake and quiet wake. In active wake, sensory stimulation elevated beta activity in parallel with gamma (80-90 Hz) activity, indicative of cognitive processing. In quiet wake, beta activity

SUBMITTER: Gronli J 

PROVIDER: S-EPMC5866048 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature