Role and limitations of routine and ambulatory scalp electroencephalography in diagnosing and managing seizures

Gregory A. Worrell, Terrence D. Lagerlund, Jeffrey R. Buchhalter

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

The scalp electroencephalogram (EEG) is the cornerstone in the diagnosis and treatment of seizure disorders. The EEG, with its excellent temporal resolution, provides a direct measurement of cortical electrophysiology, revealing, for example, the presence of interictal epileptiform discharges that identify regions of an epileptogenic brain. We define the EEG characteristics of focal and generalized epileptiform discharges and provide evidence for their varying diagnostic importance in different patient populations. Identification of nonepileptiform EEG transients, such as wicket waves, small sharp spikes, rhythmic temporal theta activity, and 14- and 6-Hz positive bursts, that can be confused for epileptiform transients is emphasized. A final point is that the clinician must interpret EEG findings within the overall clinical context.

Original languageEnglish (US)
Pages (from-to)991-998
Number of pages8
JournalMayo Clinic proceedings
Volume77
Issue number9
DOIs
StatePublished - Sep 2002

ASJC Scopus subject areas

  • Medicine(all)

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