electroencephalogram

noun Medicine/Medical.

1. a graphic record produced by an electroencephalograph. Abbreviation: EEG

noun

1. med the tracing obtained from an electroencephalographAbbreviation: EEG

n.

1934, from electro- + encephalo- (see encephalitis) + -gram.

n.

1. A graphic record of brain waves as recorded by an electroencephalograph.

1. A graphic record of brain waves representing electrical activity in the brain, used especially in the diagnosis of seizures and other neurological disorders.♦ The instrument used to record an electroencephalogram is called an electroencephalograph.It generates a record of the electrical activity of the brain by measuring electric signals using a set of electrodes attached to the scalp that act as transducers. Differences of electric potential between different parts of the brain are measured by a portable set of galvanometers and printed as a wide paper strip with multiple simultaneous waveform tracings that have standard configurations in the normal brain.

A written recording of the electrical activity of the brain. Electroencephalograms are useful in studying and detecting brain disorders.