The SS1 subset of the Montreal Archive of Sleep Studies (MASS) cohort is an open-access database of laboratory-based polysomnography (PSG) recordings defined as :
- 53 subjects (age 63±5.3 years, age range: 55-76 years)
- 19 females (age 63.7±4.9 years, age range: 56-72 years)
- 34 males (age 63.5±5.6 years, age range: 55-76 years)
- 53 PSG recordings (whole night) "* PSG.edf"
- 17 or 19 electrodes in the EEG montage
- reference is computed linked-ear (CLE) or
linked-ear reference with a 10 kΩ resistance (LER)
- 2 EOG channels
- 5 bipolar EMG channels
- 1 ECG channel
- 1 Respiratory thermistance
- 1 Air flow cannula
- 53 Sleep staging files "* Base.edf"
- Sleep stage scoring rules : AASM
- Page size (s) : 30
Notes: Mild cognitive impairment (MCI) : 15 subjects (as stated in the article) plus 2 limit cases (diagnosed MCI with updated criteria)
* Available through the restricted access descriptor procedure.
Sleep stage scoring does not necessarily start at the beginning of the PSG recording.
Sleep Annotations are available in the dataset named "SS1 Sleep Annotations" (https://doi.org/10.5683/SP3/8ZEAWT)