<prompt> Absence seizures are characterized on EEG by3 Hz spike and wave1-2 Hz spike and waveGeneralized poly spikesHypsarrythmia  <response>: EEG shows generalized, symmetric, 3-Hz spike-and-wave discharge that begins and ends suddenly, superimposed on a normal EEG background. Ref - Harrisons internal medicine 20e pg3051-3052, 3060f 