Electroencephalography in Diffuse Encephalopathies

Research output: Contribution to journalArticle

68 Scopus citations


In a patient suspected of having diffuse encephalopathy, EEG is most helpful in determining the severity and hence prognosis of the cerebral dysfunction. Less frequently, certain EEG patterns may help to suggest the etiology of the encephalopathy, e.g., herpes simplex encephalitis, subacute encephalitides, sedative drug intoxication, hepatic encephalopathy, etc. Severe grades of EEG abnormalities include invariant small-amplitude delta activity, suppression burst pattern, and electrocerebral silence. These EEG patterns carry poor prognosis if they occur in the setting of a metabolic, anoxic, or inflammatory process. On the other hand, the same EEG findings due to drug intoxication do not carry a grim prognosis because neurological recovery may be complete.

Original languageEnglish (US)
Pages (from-to)357-407
Number of pages51
JournalJournal of Clinical Neurophysiology
Issue number4
StatePublished - Oct 1984


ASJC Scopus subject areas

  • Physiology
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

Cite this