Electroencephalogram is a record of electrical activities of brain which is used by doctors to diagnose brain ailments. The EEG of a patient is done by doctors by using an instrument called electroencephalograph. Electroencephalograph consists of two electrodes which are placed on the scalp of the patient. In this way, a graph of four types of waves named as alpha, beta, delta and theta is produced on a plain paper which gives information about the activity of brain.
Test Your Understanding and Answer These Questions:
- What is EEG?
- How eeg is used?
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