Polysomnography introduction

Overnight, in-lab 14-channel polysomnography was performed using the Compumedics E-Series System (Abbotsford, Australia). Briefly, 14-channel polysomnography included monitoring the electroencephalogram, electrooculogram, electromyogram, oronasal flow by thermocouples and nasal pressure, thoracic and abdominal movement by inductance plethysmography, and oxyhemoglobin saturation by pulse oximetry. In addition to connection of sensors and electrodes, trained staff members completed signal calibrations and checked impedance. Nocturnal recordings were transmitted to the centralized reading center at Brigham and Women's Hospital and data were scored by trained technicians using current guidelines.

Notes:

• Montage and Sampling Rate Information
• Polysomnography Manual of Procedures

Signal and annotation files

Raw polysomnography data are available for 735 Cleveland Family Study participants. Each recording has a signal file (.EDF) and two versions of the event scoring and epoch staging annotations (.XML).

1. EDF - Signal files in the European Data Format exported from Compumedics Profusion.
2. XML (Profusion) - Annotation files exported from Compumedics Profusion. (Learn more...)
3. XML (NSRR) - Annotation files processed in the EDF Editor and Translator tool.

NSRR XML files can be overlaid onto EDF signal files using the EDF Viewer tool. For more information about the XML translation (mapping) process, review the files available on the EDF Editor and Translator Releases page.

History / changelog

July 2015

• Polysomnography data uploaded to sleepdata.org after exports from Compumedics Profusion

Questions?

Please reach out to us at support@sleepdata.org or in the Forum if you have questions.