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Table 2 EEG and ECG acquisition parameters

From: Using heart rate profiles during sleep as a biomarker of depression

Site Hardware (Software) Sampling Rate (Filters) [Hz] Timing of lights on/off ECG Location
ROMHC Sandman SD32 (Sandman 10.1; Natus Medical Incorporated, San Carlos, CA, USA) 256 (none) Mean habitual bedtime and wake time (up to 6:15–6:30 AM) Top of shoulders
NSRR Edentrace I or II (Edentec, Eden Prairie, MN, USA) 128 (0.15) Habitual sleep schedule 1) Below the midpoint of the right clavicle 2) Below the left breast crease, in line with the midpoint of the left clavicle (or below the midpoint of the left clavicle)
MASS Grass 15A54 (Harmonie Stellate System; Natus Medical Incorporated, San Carlos, CA, USA) 256 or 512 (0.3–100) Mean habitual bedtime and wake time Left and right arms
BMISRL Embla Titanium (RemLogic; Natus Medical Incorporated, San Carlos, CA, USA) 512 (0.1–220) Mean habitual bedtime and wake time Below each clavicle
CÉTS Grass Model 12 (Harmonie Stellate System; Natus Medical Incorporated, San Carlos, CA, USA) 256 (0.01–100) Mean habitual bedtime and wake time Below each clavicle
  1. ROMHC Royal Ottawa Mental Health Centre, NSRR National Sleep Research Resource, MASS Montreal Archive of Sleep Studies, BMISRL Western University’s Brain & Mind Institute Sleep Research Laboratory, CÉTS Centre d’étude des troubles du sommeil