PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What equipment is used during a sleep study or polysomnogram (PSG), and what do they measure?

ANSWER

During a sleep study or polysomnogram (PSG), these instruments record these activities:

  • EEG (electroencephalogram) for brain wave activity
  • EMG (electromyogram) for muscle activity like face twitches, teeth grinding, and leg movements
  • EOG (electrooculogram) for eye movements important in determining sleep stages
  • EKG (electrocardiogram) for heart rate and rhythm
  • Nasal airflow sensor for airflow
  • Snore microphone for snoring

From: How a Sleep Study Works WebMD Medical Reference

SOURCE:  National Sleep Foundation.


 

Reviewed by Nayana Ambardekar on September 15, 2018

SOURCE:  National Sleep Foundation.


 

Reviewed by Nayana Ambardekar on September 15, 2018

NEXT QUESTION:

How is snoring treated?

WAS THIS ANSWER HELPFUL

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.