EEG of a 53-year-old man with one day history of acute confusion and slowness of motor responses, showing almost continuous generalized spike wave activity.(status epilepticus)
Partial or focal EP Benign Rolandic epilepsy (BRE)
EEG of an 11-year-old patient, showing rhythmic midtemporal discharges during drowsiness
EEG of a 26-year-old patient, showing 6 Hz spike wave paroxysms (phantom spike wave).
EEG of a 9-year-old child with benign Rolandic epilepsy, showing a focus of right centrotemporal spike discharges. The right half of the figure shows a spike discharge with horizontal dipole distribution.
EEG of a 68-year-old patient with a long history of complex partial seizures, showing a focus of sharp waves and low-amplitude slow activity over the right anterior temporal region
(LGS) is a generalized epilepsy that consists of a triad of developmental delay or childhood dementia.
Mixed generalized seizures
Onset occurs between 2-18 years
EEG of an 11-year-old patient with Lennox-Gastaut syndrome, showing generalized paroxysmal fast activity (B)
EEG of a 16-year-old child with mental retardation and tonic seizures, showing slow spike wave activity superimposed on a slow background .
Epilepsies in babies
EEG of a 3-day-old comatose neonate with history of seizures, showing an electrographic "alpha band" seizure pattern without clinical accompaniment
EEG of a 5-day-old neonate, showing focal ictal pattern characterized by rhythmic sharp waves in the left Rolandic region
EEG of a 5-day-old neonate on ventilator, showing "depressed brain seizure" characterized by less than one per second, low-amplitude sharp waves over the right hemisphere.
EEG of a 6-month-old infant with developmental delay and infantile spasms, showing typical hypsarrhythmic pattern
Childhood absence epilepsy
Idiopathic generalized epilepsy that affects children between the ages of 4 and 12 years of age
Recurrent absence seizures
Typical 3-Hz spike and wave discharges seen in absence epilepsy
EEG in Creutzfeldt-Jakob disease
Alzheimer's disease (AD)
Progressive degenerative brain disease.
EEG in Alzheimer's patients
Doose Syndrome(also called Epilepsy with Myoclonic-Astatic Seizure or EP with Myo-atonic seizure