This 2015 rodent study at Harvard found that specific brain neurons trigger cortical band oscillations in the gamma wave length. The cell type:
“Has increased activity during waking and is involved in activating the cerebral cortex and generating gamma oscillations, enabling active cortical processing.”
The researchers asserted:
“Cortical gamma band oscillations..are correlated with conscious awareness.”
News coverage of the study misreported the research’s findings vis-à-vis consciousness by reprinting the Harvard press release word-for-word, which had several speculations thrown in by the PR staff that were not supported by the research.
“Awareness of consciousness-aware of the lower levels of consciousness and their contents” is a goal of Primal Therapy, as stated in Dr. Arthur Janov’s book “Primal Healing.” I look forward to curating further current research in this area.
The researchers used optogenetic stimulation of neurons, similar to the Activation of brainstem neurons induces REM sleep study. The current study took the extra step of lesioning cholinergic neurons to ensure the activity studied was due to the target neurons.
Third, the way the studied neurons generated gamma waves was to simultaneously turn off all receptor neurons, then simultaneously switch them all back on. The researchers said:
“Our results are surprising and novel in indicating that this presumptively inhibitory..” neuron type acted this way.
http://www.pnas.org/content/112/11/3535.full “Cortically projecting basal forebrain parvalbumin neurons regulate cortical gamma band oscillations”