Publications - Emfit

Heart Rate, Respiration Rate and Heart Rate Variability Measurements

A New Method for Measuring the Ballistocardiogram using EMFi Sensors in a Normal Chair
T. Koivistoinen, S. Junnila, A. Väri, T. Kööbi
Proceedings of the 26th Annual International Conference of the IEEE EMBS, San Francisco, CA, USA. September 1-5, 2004

Advanced Occupant Detection System: Detection of Human Vital Signs by Seat-Embedded Ferroelectric Films Sensors and by Vibration Analysis
Pierre Orlewski, Laurent Federspiel, Mark Cuddihy, Stephen Fuks
IEE Sensing Inc., Paper Number 11-0205, USA

An Electromechanical Film Sensor Based Wireless Ballistocardiographic Chair: Implementation and Performance
Sakari Junnila, Alireza Akhbardeh, Alpo Väri
J Sign Process Syst (2009) 57:305–320

An EMFi-film Sensor based Ballistocardiographic Chair: Performance and Cycle Extraction Method
Sakari Junnila, Alireza Akhbardeh, Alpo Väri, Teemu Koivistoinen
IEEE Workshop on Signal Processing Systems Design and Implementation, 2005.

An Intelligent Ballistocardiographic Chair using a Novel SF-ART Neural Network and Biorthogonal Wavelets
Alireza Akhbardeh, Sakari Junnila, Teemu Koivistoinen, Alpo Väri
J Med Syst (2007) 31:69–77

Applying Biorthogonal wavelets and a Novel QuickLearn Algorithm for an Intelligent Ballistocardographic chair
Alireza Akhbardeh, Sakari Junnila, Alpo Väri
2006 IEEE Mountain Workshop on Adaptive and Learning Systems

Applying Novel Supervised Fuzzy Adaptive Resonance Theory (SFART) Neural Network and Biorthogonal Wavelets for Ballistocardiogram Diagnosis
Alireza Akhbardeh, Sakari Junnila, Teemu Koivistoinen, Alpo Väri
Proceedings of the 2006 IEEE International Symposium on Intelligent Control. Munich, Germany, October 4-6, 2006

Automatic Wavelet Detrending Benefits to the Analysis of Cardiac Signals Acquired in a Moving Wheelchair
Eduardo C. Pinheiro, Octavian A. Postolache, and Pedro S. Girão
32nd Annual International Conference of the IEEE EMBS. Buenos Aires, Argen- tina, August 31 - September 4, 2010

BSeg++: A modified Blind Segmentation Method for Ballistocardiogram Cycle Extraction
Alireza Akhbardeh, Bozena Kaminska, Kouhyar Tavakolian
Proceedings of the 29th Annual International Conference of the IEEE EMBS. Cité Internationale, Lyon, France August 23-26, 2007.

Calibration and Validation of Homeostasis Parameters Estimates Produced by a DSP Embedded in a Wheelchair
Eduardo C. Pinheiro, Octavian A. Postolache, Pedro Silva Girão
2013 IEEE International Instrumentation and Measurement Technology Confer- ence (I2MTC)

Comparative Analysis of Infrasonic Cardiac Signals
K Tavakolian, B Ngai, A Akhbardeh, B Kaminska, A Blaber
Computers in Cardiology 2009;36:757-760.

Comparative analysis of two systems for unobtrusive heart signal acquisition and characterization
Octavian A. Postolache, Pedro S. Girão, Gabriela Postolache
35th Annual International Conference of the IEEE EMBS. Osaka, Japan, 3 - 7 July, 2013

Design an Intelligent Ballistocardiographic Chair using Novel QuickLearn and SF-ART Algorithms and Biorthogonal Wavelets
Alireza Akhbardeh, Sakari Junnila, Teemu Koivistoinen, Alpo Väri
2006 IEEE International Conference on Systems, Man, and Cybernetics. October 8-11, 2006, Taipei, Taiwan

Dual Architecture Platform for Unobtrusive Wheelchair User Monitoring
Eduardo C. Pinheiro, Octavian A. Postolache, Pedro Silva Girão
2013 IEEE International Symposium on Medical Measurements and Applications Proceedings (MeMeA)

EMFI – Versatile Material for Monitoring of Human Functions
Jukka Lekkala, Timo Salpavaara and Satu Käki
XVIII IMEKO WORLD CONGRESS, Metrology for a Sustainable Development. September, 17 – 22, 2006, Rio de Janeiro, Brazil

EMFi Material as Wearable Heart Rate Sensor for Night Time Recordings
Antti Vehkaoja, Timo Salpavaara, Jarmo Verho, and Jukka Lekkala
IEEE SENSORS 2010 Conference

Estimation of Vital Signs in Bed from a Single Unobtrusive Mechanical Sensor: Algorithms and Real-life Evaluation
Xavier L. Aubert and Andreas Brauers
30th Annual International IEEE EMBS Conference. Vancouver, British Columbia, Canada, August 20-24, 2008

FFT averaging of multichannel BCG signals from bed mattress sensor to improve estimation of heart beat interval
Juha M. Kortelainen and Jussi Virkkala
Proceedings of the 29th Annual International Conference of the IEEE EMBS. Cité Internationale, Lyon, France, August 23-26, 2007.

Film-Type Sensor Materials PVDF and EMFi in Measurement of Cardiorespiratory Signals — A Review
Satu Rajala and Jukka Lekkala
IEEE SENSORS JOURNAL, VOL. 12, NO. 3, MARCH 2012

Film-type transducer materials PVDF and EMFi in the measurement of heart and respiration rates
Satu Käki & Jukka Lekkala
30th Annual International IEEE EMBS Conference. Vancouver, British Colum- bia, Canada, August 20-24, 2008

Heart Rate Estimation on a Beat-to-Beat Basis via Ballistocardiography - A hybrid Approach.
David Friedrich, Xavier L. Aubert, Hartmut Füühr and Andreas Brauers
32nd Annual International Conference of the IEEE EMBS. Buenos Aires, Argentina, August 31 - September 4, 2010

Improvement of Force-sensor-based Heart Rate Estimation Using Multi-channel Data Fusion
Christoph Brüser, Juha M. Kortelainen, Stefan Winter, Mirja Tenhunen, Juha Pääkkää and Steffen Leonhardt
IEEE JOURNAL ON BIOMEDICAL HEALTH INFORMATICS, 2014

Measurement of heart sounds with EMFi transducer
Satu Käki, Minna Kääriäinen and Jukka Lekkala
Proceedings of the 29th Annual International Conference of the IEEE EMBS. Cité Internationale, Lyon, France, August 23-26, 2007.

Measurement of Respiratory Rate with High-Resolution Accelerometer and EMFit Pressure Sensor
Tuomas Reinvuo, Manne Hannula, Hannu Sorvoja, Esko Alasaarela and Risto Myllylä
SAS 2006 – IEEE Sensors Applications Symposium. Houston, Texas USA, 7-9 February 2006

Multi-channel architecture for evaluation of automated oscillometric blood pres- sure devices
Octavian Postolache, Pedro Silva Girão, Gabriela Postolache
2013 IEEE International Symposium on Medical Measurements and Applications Proceedings (MeMeA)

New Approach on Cardiac Autonomic Control Estimation Based on BCG Processing
O. Postolache, P. S. Girão and G. Postolache
Canadian Conference on Electrical and Computer Engineering, 2007. CCECE 2007.

Patch Type Integrated Sensor System for Measuring Electrical and Mechanical Cardiac Activities
Eunjeh Hyun, Seungwoo Noh, Chiyul Yoon, and Hee Chan Kim

Physiological Parameters Measurement Based on Wheelchair Embedded Sensors and Advanced Signal Processing
Octavian A. Postolache, Pedro M. B. Silva Girao, Joaquim Mendes, Eduardo C. Pinheiro, and Gabriela Postolache
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 59, NO. 10, OCTOBER 2010

Pulse Arrival Time and Ballistocardiogram Application to Blood Pressure Variability Estimation
Eduardo Pinheiro, Octavian Postolache, Pedro Girão
MeMeA 2009 - International Workshop on Medical Measurements and Applications, Cetraro, Italy, May 29-30, 2009

PVDF and EMFi sensor materials – A comparative study
Satu Rajala, Jukka Lekkala
Proc. Eurosensors XXIV, September 5-8, 2010, Linz, Austria

The smart car seat: personalized monitoring of vital signs in automotive applications
Marian Walter, Benjamin Eilebrecht, Tobias Wartzek, Steffen Leonhardt
Pers Ubiquit Comput (2011) 15:707–715

Unobstrusive Heart Rate and Respiratory Rate Monitor Embedded on a Wheelchair
Octavian Postolache, Joaquim Mendes, Pedro Silva Girão, Gabriela Postolache
MeMeA 2009 - International Workshop on Medical Measurements and Applications, Cetraro, Italy, May 29-30, 2009

Unsupervised Heart Rate Variability Estimation from Ballistocardiograms
Christoph Brüser, Stefan Winter, Steffen Leonhardt
International Journal of Bioelectromagnetism, Vol. 15, No. 1, pp. 1 - 6, 2013

Use of independent component analysis for reducing CPR artefacts in human emergency ECGs
Marcus Granegger, Tobias Werther, Hermann Gilly
Resuscitation 82 (2011) 79–84

Vital Signs Monitoring System Based on EMFi Sensors and Wavelet Analysis
0. Postolache, P. Silva Girao, G. Postolache, M. Pereira
Instrumentation and Measurement Technology Conference - IMTC 2007, Warsaw, Poland, May 1-3, 2007

Care Taking Applications

A Database-Centric Architecture for Home-Based Health Monitoring
Wagner O. de Morais, Jens Lundström, and Nicholas Wickströöm
C. Nugent, A. Coronato, and J. Bravo (Eds.): IWAAL 2013, LNCS 8277, pp. 26–34, 2013.

A “Smart Bedroom” as an Active Database System
Wagner O. de Morais and Nicholas Wickströöm
2013 9th International Conference on Intelligent Environments

Ambient assisted living system with capacitive occupancy sensor
Francisco J. Fernandez-Luque Félix L. Martínez Ginés Domènech Juan Zapata and Ramón Ruiz
Expert Systems, 2013

Concierge-Based Care Support System for Designing Your Own Lifestyle
Keiki Takadama
Big Data Becomes Personal: Knowledge into Meaning: Papers from the AAAI Spring Symposium

Data Collection Capabilities of a New Non-Invasive Monitoring System for Patients with Advanced Multiple Sclerosis
Diego E. Arias, Esteban J. Pino, Pablo Aqueveque, Dorothy W. Curtis
AMIA Annu Symp Proc. 2013 Nov 16;2013:61-8.

Designing a Pervasive Healthcare Assistive Environment for the Elderly
Rui Neves Madeira, Octavian Postolache, Nuno Correia, Pedro Silva Girão
UbiComp ‘10, Sep 26–Sep 29, 2010, Copenhagen, Denmark.

EMFi-based low-power occupancy sensor
Francisco J. Fernandez-Luque, Félix Martínez, Ginés Domènech, Juan Zapata, Ramón Ruiz
Sensors and Actuators A 191 (2013) 78–88

Estimating Older People’s Physical Functioning with Automated Health Monitoring Technologies at Home: Feature Correlations and Multivariate Analysis
Juho Merilahti, Juha Päkkä, and Ilkka Korhonen
M. Rautiainen et al. (Eds.): GPC 2011 Workshops, LNCS 7096, pp. 94–104, 2012.

Exploring Individual Care Plan for a Good Sleep
Keiki Takadama
AAAI Technical Report SS-12-05. Self-Tracking and Collective Intelligence for Personal Wellness

Low-Power Bed / Seat Occupancy Sensor Based on EMFi
Francisco Fernandez-Luque, Juan Zapata, and Ramon Ruiz
J.M. Ferrandez et al. (Eds.): IWINAC 2011, Part I, LNCS 6686, pp. 501–510, 2011.

Utilization of Wireless Sensor Network for Health Monitoring in Home Environment
Mari Zakrzewski, Sakari Junnila, Antti Vehkaoja, Harri Kailanto, Antti-Matti Vainio, Irek Defee, Jukka Lekkala, Jukka Vanhala and Jari Hyttinen
IEEE International Symposium on Industrial Embedded Systems, 2009. SIES ‘09.

Wireless, Multipurpose In-Home Health Monitoring Platform: Two Case Trials
Sakari Junnila, Harri Kailanto, Juho Merilahti, Antti-Matti Vainio, Antti Vehkaoja, Mari Zakrzewski, and Jari Hyttinen
IEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN BIOMEDICINE, VOL. 14, NO. 2, MARCH 2010

Medical Applications

A Feasibility Study on the Automatic Detection of Atrial Fibrillation using an Unobtrusive Bed-Mounted Sensor
Christoph Brüser, Matthias D H Zink, Stefan Winter, Patrick Schauerte, Steffen Leonhardt
Computing in Cardiology 2011;38:13-16.

Accelerometry-based home monitoring for detection of nocturnal hypermotor seizures based on novelty detection
Kris Cuppens, Peter Karsmakers, Anouk Van de Vel, Bert Bonroy, Milica Milose- vic, Stijn Luca, Tom Croonenborghs, Berten Ceulemans, Lieven Lagae, Sabine Van Huffel and Bart Vanrumste

Assessment of a quasi-piezoelectric mattress monitor as a detection system for generalized convulsions
Aditi P. Narechania, Irena I. Garic, Indranil Sen-Gupta, Mícheál P. Macken, Elizabeth E. Gerard, Stephan U. Schuele
Epilepsy & Behavior 28 (2013) 172–176

Automatic Arrhythmia Detection Based on Heart Beat Interval Series Recorded Through Bed Sensors During Sleep
Matteo Migliorini, Ramona Cabiddu, Sergio Cerutti, Luca T Mainardi, Juha M Kortelainen, Anna M Bianchi
Computing in Cardiology 2011;38:337-340.

Automatic Detection of Atrial Fibrillation in Cardiac Vibration Signals
Christoph Brüser, Jasper Diesel, Matthias D. H. Zink, Stefan Winter, Patrick Schauerte, and Steffen Leonhardt
IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, VOL. 17, NO. 1, JANUARY 2013

Detection of Epileptic Seizures based on Video and Accelerometer Recordings
Kris Cuppens
Doctoral thesis, Katholieke Universiteit Leuven, 2012

Miniaturized Wireless ECG Monitor for Real-Time Detection of Epileptic Seizures
Fabien Masse, Martien van Bussel, Aline Serteyn, Johan Arends, Julien Penders
Proceedings of WH ‘10 Wireless Health 2010

Non-EEG seizure-detection systems and potential SUDEP prevention: State of the art
Anouk Van de Vel, Kris Cuppens, Bert Bonroy, Milica Milosevic, Katrien Jansen, Sabine Van Huffel, Bart Vanrumste, Lieven Lagae, Berten Ceulemans
Seizure 22 (2013) 345–355

Prevention and Risk Reduction in Hearth Health
B. Kaminska, K. Tavakolian, B. Ngai, Y. Chuo, A. Vaseghi, and B. Carmichael
NSTI-Nanotech 2007

Prospective Study of the Emfit Movement Monitor
Kate Van Poppel, Stephen P. Fulton, Amy McGregor, Michelle Ellis, Andrea Patters, and James Wheless
Journal of Child Neurology 28(11) 1434-1436, 2013.

Review Article - Sudden, Unexpected Death in Epilepsy
Orrin Devinsky
N Engl J Med 2011;365:1801-11.

Unobtrusive Non-Contact Detection of Arrhythmias using a “Smart” Bed
Christoph Brüser
Acta Polytechnica Vol. 51 No. 5/2011

Critical evaluation of four different seizure detection systems tested on one patient with focal and generalized tonic and clonic seizures.
Van de Vel A, Verhaert K, Ceulemans B.
Epilepsy Behav. 2014 Aug;37:91-4. doi: 10.1016/j.yebeh.2014.06.014. Epub 2014 Jul 7.
PMID: 25010322

Mental Applications

Measuring Emotional Wellbeing with a Non-intrusive Bed Sensor
Gert van der Vloed and Jelle Berentsen
T. Gross et al. (Eds.): INTERACT 2009, Part II, LNCS 5727, pp. 908–911, 2009.

On the Feasibility of Using Activity Recognition and Context Aware Interaction to Support Early Diagnosis of Bipolar Disorder
David Tacconi, Oscar Mayora, Paul Lukowicz, Bert Arnrich, Gerhard Tröster, Christian Haring
International Conference on Pervasive Computing Technologies for Health- care, 2008.

Relationship of Psychological and Physiological Variables in Long-Term Self-Moni- tored Data During Work Ability Rehabilitation Program
Juha Päkkä, Juho Merilahti, Elina M. Mattila, Esko Malm, Kari Antila, Martti T. Tuomisto, Ari Viljam Saarinen, Mark van Gils, and Ilkka Korhonen
IEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN BIOMEDICINE, VOL. 13, NO. 2, MARCH 2009

Towards a Care Support System that Can Guess the Way Aged Persons Feel
Keiki Takadama
Data Driven Wellness: From Self-Tracking to Behavior Change: Papers from the 2013 AAAI Spring Symposium

Sleep Disorder Applications

Compressed tracheal sound analysis in screening of sleep-disordered breathing
Esa Rauhala, Joel Hasan, Antti Kulkas, Antti Saastamoinen, Eero Huupponen, Frank Cameron, Sari-Leena Himanen
Clinical Neurophysiology 119 (2008) 2037–2043

Detection of compressed tracheal sound patterns with large amplitude variation during sleep
A. Kulkas, E. Rauhala, E. Huupponen, J. Virkkala, M. Tenhunen, A. Saastamoinen, S-L. Himanen
Med Biol Eng Comput (2008) 46:315–321

Emfit movement sensor in evaluating nocturnal breathing
Mirja Tenhunen, Ella Elomaa, Heli Sistonen, Esa Rauhala, Sari-Leena Himanen
Respiratory Physiology & Neurobiology 187 (2013) 183– 189

High frequency components of tracheal sound are emphasized during prolonged flow limitation
M Tenhunen, E Rauhala, E Huupponen, A Saastamoinen, A Kulkas and S-L Himanen
Physiol. Meas. 30 (2009) 467–478

Increased respiratory effort during sleep is non-invasively detected with movement sensor
Mirja Tenhunen, Esa Rauhala, Jussi Virkkala, Olli Polo, Antti Saastamoinen, Sari-Leena Himanen
Sleep Breath (2011) 15:737–746

New tracheal sound feature for apnoea analysis
A. Kulkas, E. Huupponen, J. Virkkala, M. Tenhunen, A. Saastamoinen, E. Rauhala, S.-L. Himanen
Med Biol Eng Comput (2009) 47:405–412

Performance of Non-invasive Devices in Evaluation of Periodic Limb Movements and Sleep-disordered Breathing
Esa Rauhala
Doctoral Thesis, Faculty of Medicine of the University of Tampere, 2009.

Periodic limb movement screening as an additional feature of Emfit sensor in sleep-disordered breathing studies
Esa Rauhala, Jussi Virkkala, Sari-Leena Himanen
Journal of Neuroscience Methods 178 (2009) 157–161

Prolonged spiking periods pattern detection method by using Emfit and SCSB signals
Jarmo Alametsä, Antti Saastamoinen, Eero Huupponen, Alpo Väri, Atte Joutsen, Joel Hasan, Esa Rauhala, and Sari-Leena Himanen
Proceedings of the 12th Finnish Artificial Intelligence Conference STeP. 2006.

Snoring seconds detection with EMFi sensor strips
Jarmo Alametsä, Jari Viik, Eero Huupponen, Antti Kulkas, Alpo Väri, and Sari-Leena Himanen
2010 12th Biennial Baltic Electronics Conference (BEC2010), Tallinn, Estonia, October 4-6, 2010

Heart rate variability evaluation of Emfit sleep mattress breathing categories in NREM sleep.
Tenhunen M, Hyttinen J, Lipponen JA, Virkkala J, Kuusimäki S, Tarvainen MP, Karjalainen PA, Himanen SL.
Clin Neurophysiol. 2014 Sep 6. pii: S1388-2457(14)00468-4. doi: 10.1016/j. clinph.2014.08.012. PMID: 25241203

Screening sleep disordered breathing in stroke unit.
Väyrynen K, Kortelainen K, Numminen H, Miettinen K, Keso A, Tenhunen M, Huhtala H, Himanen SL.
Sleep Disord. 2014;2014:317615. doi: 10.1155/2014/317615. Epub 2014 May 27. PMID: 24991437

Sleep Staging Applications

Automatic Detection of sleep macrostructure based on bed sensors
M.O. Mendez, M. Matteucci, S. Cerutti, A.M. Bianchi and Juha M. Kortelainen
31st Annual International Conference of the IEEE EMBS. Minneapolis, Min- nesota, USA, September 2-6, 2009

Automatic sleep staging based on ballistocardiographic signals recorded through bed sensors
Matteo Migliorini, Anna M. Bianchi, Domenico Nisticò, Juha Kortelainen, Edgar Arce-Santana, Sergio Cerutti, and Martin O. Mendez
32nd Annual International Conference of the IEEE EMBS. Buenos Aires, Argen- tina, August 31 - September 4, 2010

Combining Unobtrusive Electrocardiography and Ballistography for more Accurate Monitoring of Sleep
Antti Vehkaoja, Mikko Peltokangas, Jarmo Verho, and Jukka Lekkala
Proceedings of the 2012 IEEE 12th International Conference on Bioinformatics & Bioengineering (BIBE), Larnaca, Cyprus, 11-13 November 2012

Multichannel Bed Pressure Sensor for Sleep Monitoring
Juha M Kortelainen, Mark van Gils, Juha Päkkä
Computing in Cardiology 2012; 39:313-316.

Review Article - Recent Developments in Home Sleep-Monitoring Devices
Jessica M. Kelly, Robert E. Strecker, and Matt T. Bianchi
ISRN Neurology Volume 2012, Article ID 768794

Sleep Staging Based on Signals Acquired Through Bed Sensor
J.M. Kortelainen, M.O. Mendez, A.M. Bianchi, M. Matteucci, S. Cerutti
Information Technology in Biomedicine, IEEE Transactions on (Volume:14 , Issue: 3 ), 2010

Sleep-Wake Detection based on Respiratory Signal Acquired through a Pressure Bed Sensor
Guerrero-Mora G, Palacios Elvia, Bianchi AM, Kortelainen J, M Tenhunen, SL Himanen, Méndez MO, E Arce-Santana, O Gutiérrez-Navarro
34th Annual International Conference of the IEEE EMBS, San Diego, California USA, 28 August - 1 September, 2012

Long-Term Subjective and Objective Sleep Analysis of Total Sleep Time and Sleep Quality in Real Life Settings
Juho Merilahti, Ari Saarinen, Juha Päkkä, Kari Antila, Elina Mattila and Ilkka Korhonen
Proceedings of the 29th Annual International Conference of the IEEE EMBS, Cité Internationale, Lyon, France, August 23-26, 2007.

Time-frequency analysis of the ballistocardiogram for sleep staging
Matteo Migliorini
Doctoral thesis, POLITECNICO DI MILANO, Facoltà di Ingegneria dei Sistemi, 2010