Many patients worry needlessly about these electrodes. The electrodes simply record the electrical activity present in your body; they do not generate any electrical current of their own. Most importantly, the application of the electrodes does not hurt. You may feel a little strange with electrodes and wires attached to your face and head, but the procedure is entirely painless. You may then relax until bedtime.
At bedtime, the technician will prepare to start the recording of your study. There will be a technician in the monitoring room all night. If you need anything during the night, all you need to do is push the call button and speak, and the technician will hear you through the intercom.
All patients are expected to stay in bed for seven hours. This means that the technicians will generally be waking you up seven hours from lights out. At this time they will remove your electrodes. If you are to be tested during the day, some – though not all – of your electrodes will be removed in the morning. Patients who remain for daytime testing are served breakfast.