They are most often seen in young adults and adolescents, and are not associated with increased epilepsy risk.
They should be bilateral and synchronous, and are more common in the posterior quadrants when drowsy. Taking the crown for perhaps the most uninspired name of EEG findings, 14 and 6 positive spikes describe 1-2 second bursts of sharply contoured positive waveforms that come in frequencies of either 14 Hz (13-17 Hz) or 6 Hz (5-7 Hz), or an admixture of both.