An electroencephalograph (EEG) is an electronic, computerized device used to record the electrical activity of the brain by means of a series of electrodes affixed to the scalp. It is often used in conjunction with video recording of the patient.
As a diagnostic tool, EEGs have been used to diagnose epilepsy and other seizure activity, strokes, infections, hemorrhages, adequacy of blood supply to the brain, efficacy of biofeedback and neurofeedback and to localize certain tumors. They are especially useful because they can pinpoint the location of seizure activity as well as tumors and injuries to the brain. EEGs are also used to monitor patients in a coma and, during certain types of surgery, to indicate the effectiveness and depth of anesthesia.
See also Brain ; Brain disorders ; Electrical stimulation of the brain (ESB); Psychosurgery .
Clark, David L., et al. The Brain and Behavior: An Introduction to Behavioral Neuroanatomy. New York: Cambridge University Press, 2010.
Demos, John N. Getting Started with Neurofeedback. New York: Norton, 2005.
Laureys, Steven, and Giulio Tononi. The Neurology of Consciousness: Cognitive Neuroscience and Neuropathology. Amsterdam: Academic, 2009.
Mason, Peggy. Medical Neurobiology. New York: Oxford University Press, 2011.
Pomerantz, James R. Topics in Integrative Neuroscience: From Cells to Cognition. Cambridge, UK: Cambridge University Press, 2008.
Schaller, Bernhard. Neuroscience Imaging Research Trends. New York: Nova Science, 2008.
Squire, Larry R. Fundamental Neuroscience. Amsterdam: Elsevier/Academic Press, 2013.
eMedicineHealth. “Electroencephalography.” http://www.mayoclinic.org/tests-procedures/eeg/basics/definition/prc–20014093 (accessed September 18, 2015).
Johns Hopkins Medicine. “Electroencephalogram: EEG.” http://www.hopkinsmedicine.org/healthlibrary/test_procedures/neurological/electroencephalogram_eeg_92,P07655/ (accessed September 18, 2015).
Mayo Clinic. “EEG: Electroencephalogram.” http://www.emedicinehealth.com/electroencephalography_eeg/article_em.htm (accessed September 18, 2015).