Certified Polysomnographic Technician (CPSGT) 2025 – 400 Free Practice Questions to Pass the Exam

The recommended electrode placement for a standard EEG during polysomnography is based on the International 10-20 system. This system provides a standardized method of electrode placement that ensures consistency and reliability in recording EEG data. By following this established framework, technicians are able to accurately capture brain wave patterns across different regions, which is essential for diagnosing sleep disorders.

The use of the International 10-20 system allows for systematic mapping of the scalp, ensuring that electrodes are positioned relative to anatomical landmarks, which helps in correlating brain activity with specific areas of the brain. This method has been widely validated in both clinical and research settings, making it the gold standard for polysomnographic studies.

In contrast, other options such as placing electrodes based on patient preference, random placement, or using a different system like the 5-10 method do not provide the same level of reliability and repeatability needed for accurate monitoring and interpretation of brain activity. These approaches could lead to inconsistencies in the data and hinder the proper evaluation of sleep architecture and pathologies.