Mild automatisms could be seen during the course of the absence and stop with the end of the absence seizure. When an EEG is recorded during the typical absence seizure, a 3 Hz spike-and-wave discharges is recorded starting with the start of the arrest of the activity. At the end of the discharge, the patient resumes its activity.
During absence seizures, subtle motor actions are observed while the seizure is happening and stop at the end of the seizure. An EEG recording during a typical absence seizure shows 3 Hz spike-and-wave discharges that begin with the cessation of brain activity. The patient resumes normal activity after the discharge subsides.