Stéphanie DEVUYST
PhD - Electrical Engineer - Teaching Assistant
stephanie.devuyst@umons.ac.be

Faculty of Engineering, Mons
Circuit Theory and Signal Processing Division


Profile Research Academic Links Publications Databases Contact

Profile

I was born in Namur, Belgium, in 1980. In 2003, I hold an electrical engineering degree from the Faculté Polytechnique de Mons (FPMS, Belgium). During 2 years, I worked on the WALEO project DREAMS. This project was dedicated to automatically determine the sleep stages which follow during one night by analyzing polysomnographics signals (EOG, EEG, EMG, etc.). In this way, I started a PhD thesis on this subject. Since 2011, I hold my PhD in applied sciences from the University of Mons on biomedical signal processing. Now, I'm an assistant in the TCTS Lab of the FPMs. I take part to the Circuit Theory and Signal Processing Labs and exercises. I also supervise several student projects in second and final year.

Return to menu


Research Interests

My current research activities are focusing on automatic sleep analysis and biomedical signal processing. I was involved in the WALEO project DREAMS which aimed to analyze polysomnographics signals (EOG, EEG, EMG, etc.) to determine the sleep stages which follow during one night. More especially, we took better account of the artifacts present in the signals in order to improve the sleep stage quotation.

I'm also a member of the Biomedical Group of the TCTS Lab.

Return to menu


Academic Links

Return to menu


Publications


PhD Dissertation

2011


Regular Papers in Journals

2008


Papers in Conference Proceedings

2011

2010

2008

2006

2004


Thesis

2011

2007

2003


Other

2004

Return to menu


The DREAMS Databases

During the DREAMS project, we collected a large amount of polysomnographic recordings (PSG) to tune, train and test our automatic detection algorithms.

These recordings were annotated in microevents or in sleep stages by several experts. They were acquired in a sleep laboratory of a belgium hospital using a digital 32-channel polygraph (BrainnetTM System of MEDATEC, Brussels, Belgium). The standard European Data Format (EDF) was used for storing.

In order to facilitate future research and performance comparision, we decided to publish these data on Internet. Therefore, eight DREAMS databases are available according to the annotation carried out (click on the link to open):

These Dreams Databases 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 one of these databases 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 avre@umons.ac.be.

Return to menu


Assessment Algorithm

During the DREAMS project, we also observed that perfomances completed in the same field by other authors were hardly comparable because their assessment methods were radically different. That why we propose a unique assessment method using a well defined terminology and from which it is possible to establish all the desired confusion matrices. This assessment method allows to compare an automatic annotation in micro-events with one or two visual annotations. It has been implemented under Matlab and the corresponding algorithms can be downloaded Here.

Return to menu


Contact

Stéphanie DEVUYST
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
stephanie.devuyst@umons.ac.be