The recorded brainwaves are sent to amplifiers, then to a computer or the cloud to process the data. EEG sensors are placed on a participant’s head, then the electrodes non-invasively detect brainwaves from the subject.ĮEG sensors can record up to several thousands of snapshots of the electrical activity generated in the brain within a single second. An EEG machine measures the electrical activity in the cerebral cortex, the outer layer of the brain, during an EEG test. ![]() The billions of cells in your brain produce very small electrical signals that form non-linear patterns called brainwaves.
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