How many channels are typically recorded during a full polysomnography study?

A full polysomnography study typically records 7-12 channels to provide a comprehensive evaluation of a patient's sleep patterns and disorders. This range includes critical parameters such as EEG (electroencephalogram) readings for brain activity, EOG (electrooculogram) for eye movements, and EMG (electromyogram) for muscle activity, among others. Additionally, parameters like airflow, respiratory effort, and oxygen saturation can also be monitored, contributing to a thorough understanding of the patient's sleep architecture and any potential sleep disorders, such as sleep apnea or narcolepsy. This multi-channel approach allows healthcare professionals to gather the necessary data to make accurate diagnoses and treatment plans.