The DREAMS Apnea Database

Stéphanie DEVUYST
Université de Mons
Faculté Polytechnique de Mons - TCTS Lab
31, Boulevard Dolez
B-7000 Mons (Belgium)
ph : +32 (65) 37.47.20
fax: +32 (65) 37.47.29

Introduction Description Format Download More


This apnea database was collected during the DREAMS project, to tune, train and test our automatic detection algorithms.

It consist of 12 whole-night PSG recordings coming from patients with sleep apnea syndrome and annoted by an expert in respiratory events (central, obstructive and mixed apnea and hypopnea).

In order to facilitate future research and performance comparision, we decided to publish these data on Internet. Be simply aware that this DREAMS Apnea Database of University of MONS - TCTS Laboratory (Stéphanie Devuyst, Thierry Dutoit) and Université Libre de Bruxelles - CHU de Charleroi Sleep Laboratory (Myriam Kerkhofs) is under terms of the Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) License. Each use of this database and/or its content must be attributed to University of MONS - TCTS Laboratory (Stéphanie Devuyst, Thierry Dutoit) and Université Libre de Bruxelles - CHU de Charleroi Sleep Laboratory (Myriam Kerkhofs). Any other additional authorisations may be asked to

If you are interested in adding your own visual or automatic annotations, please contact me:

Database description

Data collected were acquired in a sleep laboratory of a belgium hospital using a digital 32-channel polygraph (BrainnetTM System of MEDATEC, Brussels, Belgium). They consist of 12 polysomnographic recordings coming from patients with sleep apnea syndrome. Two EOG channels (P8-A1, P18-A1), three EEG channels (CZ-A1 or C3-A1, FP1-A1 and O1-A1), the submental EMG, the ECG , the nasal air flow (NAF) and the abdominal (VAB) and thoracic (VTH) inductive plethysmography were recorded. The standard European Data Format (EDF) was used for storing. The sampling frequency was 200Hz. These excerpts were annoted in respiratory events (central, obstructive and mixed apnea and hypopnea) by an expert. Criteria used were those of the American Academy of Sleep Medicine (AASM). The corresponding whole-night recordings were also previously scored in sleep stages according to the Rechtschaffen and Kales criteria.

Name Sampling frequency Age apnea/hypopnea index Recording duration ( Nr. of hypopnea scored by the expert Nr. of obstructive apnea scored by the expert Nr. of central apnea scored by the expert Nr. of mixed apnea scored by the expert
excerpt1 200Hz 51 50.9/h 09:32:00 249 194 3 6
excerpt2 200Hz 64 16.1/h 08:27:20 47 66 0 1
excerpt3 200Hz 70 49.3/h 09:33:40 38 340 0 0
excerpt4 200Hz 50 95/h 08:36:00 333 389 0 1
excerpt5 200Hz 41 80.9/h 09:22:40 189 350 17 144
excerpt6 200Hz 54 25.1/h 09:12:30 151 66 0 0
excerpt7 200Hz 60 51/h 07:32:00 113 209 1 9
excerpt8 200Hz 50 7.4/h 09:05:20 12 39 0 0
excerpt9 200Hz 54 21.2/h 08:35:20 37 128 0 0
excerpt10 200Hz 51 55.5/h 08:00:00 62 131 69 108
excerpt11 200Hz 51 46.7/h 08:02:40 172 116 1 0
excerpt12 200Hz 51 59.1/h 08:02:00 37 51 43 136

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File format

Three files are available per excerpt:

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Database download

You can download each file separately by doing "right-click" and "save target as" on the links below (in the table),
or you can directly download the entire database by clicking on this link: DatabaseApnea.rar

EDF Visual scoring 1 Hypnogram
excerpt1.edf Visual_scoring1_excerpt1.txt Hypnogram_excerpt1.txt
excerpt2.edf Visual_scoring1_excerpt2.txt Hypnogram_excerpt2.txt
excerpt3.edf Visual_scoring1_excerpt3.txt Hypnogram_excerpt3.txt
excerpt4.edf Visual_scoring1_excerpt4.txt Hypnogram_excerpt4.txt
excerpt5.edf Visual_scoring1_excerpt5.txt Hypnogram_excerpt5.txt
excerpt6.edf Visual_scoring1_excerpt6.txt Hypnogram_excerpt6.txt
excerpt7.edf Visual_scoring1_excerpt7.txt Hypnogram_excerpt7.txt
excerpt8.edf Visual_scoring1_excerpt8.txt Hypnogram_excerpt8.txt
excerpt9.edf Visual_scoring1_excerpt9.txt Hypnogram_excerpt9.txt
excerpt10.edf Visual_scoring1_excerpt10.txt Hypnogram_excerpt10.txt
excerpt11.edf Visual_scoring1_excerpt11.txt Hypnogram_excerpt11.txt
excerpt12.edf Visual_scoring1_excerpt12.txt Hypnogram_excerpt12.txt

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