PSG Tech Guide

Polysomnographic Technologists Resources

Back to Electrode Placement / Patient Setup

Electrode Placement / Patient Setup

10–20 electrode placement

Standard measuring system for EEG electrode sites.

Educational reference, not a diagnostic tool. A scored event, an elevated index and a clinical diagnosis are different things. Follow your facility’s scoring manual, notification policies and clinical protocols.

  • Measure nasion to inion and preauricular points.
  • Keep impedances low and balanced.
  • Label odd numbers left, even right.

Waveforms

10–20 placement: quick reference

Not clinically reviewed

Electrode Placement / Patient Setup

Percentages use the relevant full head measurement. Measure each patient; follow lab protocol.Source: User-supplied electrode-placement reference. Source details and clinical review were not supplied.

10–20 placement: measure & attach

Not clinically reviewed

Electrode Placement / Patient Setup

Confirm this sequence with your instructor. Measure each patient. PA = preauricular point.Source: User-supplied electrode-placement reference. Source details and clinical review were not supplied.