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Electroencephalogram is the recording of

1. electric potentials originating from different parts of the heart in the form of waves.
2. the technique of rupturing cells and separating their components especially cell organelles for studying their chemistry and functions.
3. the technique of separation of charged solutes on the basis of their differential migration in an applied electric field.
4. electric potentials originating from different parts of the brain in the form of waves.

Correct answer: electric potentials originating from different parts of the brain in the form of waves.

Solution

An electroencephalogram (EEG) records the brain’s electrical activity as wave patterns from different regions. The other options describe heart recordings, cell fractionation, and electrophoresis.

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