As they looked rather similar to sleepiness waves, the question remains to identify light-induced oscillations in day light and to differentiate them from sleepiness- related oscillations.

Our results thus reveal the existence of a functional specialization in the gamma range, with grouping- related oscillations showing up at higher frequencies than attention-related oscillations.

Event- related oscillations (EROs) represent highly heritable neuroelectric correlates of cognitive processes that manifest deficits in alcoholics and in offspring at high risk to develop alcoholism.