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Definitions:
EEG
Short for electroencephalogram, a test that measures electrical activity in the brain using small, flat metal discs attached to the scalp.
ECG
An electrocardiogram, a diagnostic tool that measures and records the electrical activity of the heart to detect cardiac abnormalities.
Action Potentials
Rapid changes in the membrane potential that briefly reverse the polarity of a neuron or muscle cell, allowing for signal transmission.
Electrodes
Conductor through which an electric current enters or leaves in a medium, whether it be a gaseous, liquid, or solid substance.
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