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 absences seizures, subtle movements can be 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 when brain activity stops. The patient resumes normal activity after the discharge ends.