Electroencephalogram
The electroencephalogram is an instrument used to record the electrical activity of the brain. The EEG can evaluate the abnormal brain activity of epilepsy, cerebral palsy, strokes, and several others. Electrodes over scattered over the brain from the frontal to occipital lobes to measure the electrical activity of the brain. The electrodes will record the electrical impulses that are sent by the brain. A typical EEG will have sixteen leads connect . . .
A typical brain will show some kind of activity in the beta or alpha range in the waking stage. This information is then evaluated by the pattern of the activity recorded. A normal beta range is >12cps and the normal alpha range is 8-12 cps. An EEG can provide vital information about the health and functioning of the brain. The results will then be interpreted to find any medical abnormalities. EEGs are sometimes best achieved when the patient is sleeping. ed to the surface electrodes, which will document the brain activity onto a polygraph. This type of electroencephalography can detect short REM latency and reduced delta sleep with patients that have depression. The best way to interpret this activity is by the human eye instead of the computerized methods that have been developed. Sleep EEGs (polysomnography) measure the all-night brain activity throughout sleep. Psychoactive drugs like lithium will show rapid activity of the brain. It can show if a patient is taking prescribed or unprescribed drugs. An EEG can establish if a person’s cognitive symptoms are result from a metabolic disorder. When the patient becomes tired, theta and delta ranges are observed.
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, Sleep EEGs, brain activity, activity brain, electrical activity brain, record electrical, alpha range, electrical activity, theta delta, |
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