A graphic (voltage vs. Time) depiction of the brain’s electrical potentials (brain waves) recorded by scalp electrodes. It is used for the diagnosis of neurological and neuropsychiatric disorders (especially seizure disorders) and in neurophysiological research. Sometimes used interchangeably with electrocorticogram and depth record, in which the electrodes are in direct contact with brain tissue.
A measure of brain function.
A chart on which the electrical impulses in the brain are recorded.
Graphic recording, produced by an electroencephalograph, of the electric activity of the brain. Electroencephalograms are helpful in detecting and locating brain tumors and in diagnosing epilepsy.
A record of the brain’s electric impulses and activity via monitoring equipment and a printout; important in studying epilepsy and other neurologic conditions.
Also known as an EEG, a neurological test in which the electrical activity of the brain is recorded and studied. The EEG is a useful tool in the diagnosis of medical problems, such as epilepsy, stroke, brain tumors, sleep disorders, and degenerative diseases. In this painless procedure, a person lies on a table and electrodes are attached to his or her scalp with a conductive paste. The brain’s electrical activity is recorded on a long strip of paper or a computer screen. Abnormal activity is a sign of a possible problem. A regular EEC usually takes no longer than an hour. In a sleep EEC, a person is encouraged to sleep rather than merely relax. An ambulatory EEC is one in which an individual’s brain activity is measured during normal activities.
A graphical representation depicting the cerebral wave patterns detected by the electrodes positioned on the cranium. Alterations in brain wave activity can serve as a potential indicator of disorders affecting the nervous system.
A visual representation of the electrical waves emanating from different regions of the brain, employed to assist in diagnosing brain-related diseases and disorders. These visual records reveal distinctive patterns of waves in conditions like epilepsy and brain tumors. Frequently abbreviated as E.E.G.