Please find a selection of my research papers. Feel free to contact me if you cannot find a particular manuscript here on Mendeley, ResearchGate, or Google Scholar.


  2019 (5)
Granger-causal Attentive Mixtures of Experts: Learning Important Features with Neural Networks. Schwab, P.; Miladinovic, D.; and Karlen, W. In 33rd AAAI Conference on Artificial Intelligence (AAAI-19), 2019. AAAI Press
Granger-causal Attentive Mixtures of Experts: Learning Important Features with Neural Networks [link]Website   bibtex   abstract
PhoneMD: Learning to Diagnose Parkinsonâ??s Disease from Smartphone Data. Schwab, P.; and Karlen, W. In 33rd AAAI Conference on Artificial Intelligence (AAAI-19), 2019. AAAI Press
PhoneMD: Learning to Diagnose Parkinsonâ??s Disease from Smartphone Data [pdf]Paper   PhoneMD: Learning to Diagnose Parkinsonâ??s Disease from Smartphone Data [link]Website   bibtex   abstract
Quantifying cyanide in water and foodstuff using corrin-based CyanoKit technologies and a smartphone. Cherbuin, M.; Zelder, F.; and Karlen, W. The Analyst, 144(1): 130-136. 2019.
Quantifying cyanide in water and foodstuff using corrin-based CyanoKit technologies and a smartphone [pdf]Paper   Quantifying cyanide in water and foodstuff using corrin-based CyanoKit technologies and a smartphone [link]Website   bibtex   abstract
Automated False Alarm Reduction in a Real-Life Intensive Care Setting Using Motion Detection. Muroi, C.; Meier, S.; De Luca, V.; Mack, D., J.; Strässle, C.; Schwab, P.; Karlen, W.; and Keller, E. Neurocritical Care,1-8. 7 2019.
Automated False Alarm Reduction in a Real-Life Intensive Care Setting Using Motion Detection [pdf]Paper   Automated False Alarm Reduction in a Real-Life Intensive Care Setting Using Motion Detection [link]Website   bibtex
Configurable Mobile System for Autonomous High-Quality Sleep Monitoring and Closed-Loop Acoustic Stimulation. Ferster, M., L.; Lustenberger, C.; and Karlen, W. IEEE Sensors Letters, 3(5): 1-4. 5 2019.
Configurable Mobile System for Autonomous High-Quality Sleep Monitoring and Closed-Loop Acoustic Stimulation [pdf]Paper   Configurable Mobile System for Autonomous High-Quality Sleep Monitoring and Closed-Loop Acoustic Stimulation [link]Website   bibtex
  2018 (9)
A bead-based immunogold-silver staining assay on capillary-driven microfluidics. Pham, N., M.; Rusch, S.; Temiz, Y.; Lovchik, R., D.; Beck, H.; Karlen, W.; and Delamarche, E. Biomedical microdevices, 20: 41. 5 2018.
A bead-based immunogold-silver staining assay on capillary-driven microfluidics. [pdf]Paper   A bead-based immunogold-silver staining assay on capillary-driven microfluidics. [link]Website   bibtex   abstract
Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care. Schwab, P.; Keller, E.; Muroi, C.; Mack, D., J.; Strässle, C.; and Karlen, W. In Proceedings of the 35th International Conference on Machine Learning, ICML 2018, volume 80, of Proceedings of Machine Learning Research, pages 4525--34, 2 2018.
Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care [pdf]Paper   Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care [link]Website   bibtex   abstract
1006 Investigating Pre-sleep Processes And How They Influence Sleep And Nightmares. Maeder, T.; Whitford, J.; Feinaigle, P.; Karlen, W.; and Kleim, B. Sleep, 41(suppl_1): A372-A373. 4 2018.
1006 Investigating Pre-sleep Processes And How They Influence Sleep And Nightmares [pdf]Paper   1006 Investigating Pre-sleep Processes And How They Influence Sleep And Nightmares [link]Website   bibtex
Malaria and the â??lastâ?? parasite: how can technology help?. Pham, N., M.; Karlen, W.; Beck, H.; and Delamarche, E. Malaria Journal, 17(1): 260. 2018.
Malaria and the â??lastâ?? parasite: how can technology help? [pdf]Paper   Malaria and the â??lastâ?? parasite: how can technology help? [link]Website   bibtex   abstract
Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care. Schwab, P.; Keller, E.; Muroi, C.; Mack, D., J.; Strässle, C.; and Karlen, W. In Proceedings of the 35th International Conference on Machine Learning, volume 80, pages 4518-27, 7 2018. PMLR
Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care [pdf]Paper   Not to Cry Wolf: Distantly Supervised Multitask Learning in Critical Care [link]Website   bibtex   abstract
Multispectral camera fusion increases robustness of ROI detection for biosignal estimation with nearables in real-world scenarios. Scebba, G.; Tushaus, L.; and Karlen, W. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 5672-5, 7 2018. IEEE
Multispectral camera fusion increases robustness of ROI detection for biosignal estimation with nearables in real-world scenarios [pdf]Paper   Multispectral camera fusion increases robustness of ROI detection for biosignal estimation with nearables in real-world scenarios [link]Website   bibtex   abstract
Changes of hemodynamic and cerebral oxygenation after exercise in normobaric and hypobaric hypoxia: associations with acute mountain sickness. Kammerer, T.; Faihs, V.; Hulde, N.; Bayer, A.; Hübner, M.; Brettner, F.; Karlen, W.; Kröpfl, J., M.; Rehm, M.; Spengler, C.; and Schäfer, S., T. Annals of occupational and environmental medicine, 30(1): 66. 2018.
Changes of hemodynamic and cerebral oxygenation after exercise in normobaric and hypobaric hypoxia: associations with acute mountain sickness. [pdf]Paper   Changes of hemodynamic and cerebral oxygenation after exercise in normobaric and hypobaric hypoxia: associations with acute mountain sickness. [link]Website   bibtex   abstract
Data Integrityâ??Based Methodology and Checklist for Identifying Implementation Risks of Physiological Sensing in Mobile Health Projects: Quantitative and Qualitative Analysis. Zhang, J.; Tüshaus, L.; Nuño Martínez, N.; Moreo, M.; Verastegui, H.; Hartinger, S., M.; Mäusezahl, D.; and Karlen, W. JMIR mHealth and uHealth, 6(12): e11896. 2018.
Data Integrityâ??Based Methodology and Checklist for Identifying Implementation Risks of Physiological Sensing in Mobile Health Projects: Quantitative and Qualitative Analysis [pdf]Paper   Data Integrityâ??Based Methodology and Checklist for Identifying Implementation Risks of Physiological Sensing in Mobile Health Projects: Quantitative and Qualitative Analysis [link]Website   bibtex
Automation in medicine: from homecare to clinical applications. Karlen, W.; Schauer, T.; Möller, K.; and Simanski, O. Volume 66 . pages 990. 2018.
Automation in medicine: from homecare to clinical applications [link]Website   bibtex
  2017 (4)
Improving ROI detection in photoplethysmographic imaging with thermal cameras. Scebba, G.; Dragas, J.; Hu, S.; and Karlen, W. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 4285-88, 2017.
Improving ROI detection in photoplethysmographic imaging with thermal cameras [pdf]Paper   bibtex   abstract
Beat by Beat: Classifying Cardiac Arrhythmias with Recurrent Neural Networks. Schwab, P.; Scebba, G., C.; Zhang, J.; Delai, M.; and Karlen, W. In Computing in Cardiology (CinC), pages 1-4, 9 2017.
Beat by Beat: Classifying Cardiac Arrhythmias with Recurrent Neural Networks [pdf]Paper   Beat by Beat: Classifying Cardiac Arrhythmias with Recurrent Neural Networks [pdf]Website   bibtex   abstract
Influence of acute normobaric and hypobaric hypoxia on hemodynamics , cognitive function , cerebral near-infrared spectroscopy and gene expression. Faihs, V.; Kammerer, T.; Hulde, N.; Brettner, F.; Rehm, M.; Karlen, W.; Kroepfl, J.; Spengler, C.; Kreth, S.; and Schäfer, S. In 2nd Human Physiology Workshop, pages 2017, 2017.
Influence of acute normobaric and hypobaric hypoxia on hemodynamics , cognitive function , cerebral near-infrared spectroscopy and gene expression [pdf]Paper   bibtex
Corrigendum: Variability in estimating shunt from single pulse oximetry measurements (2015 Physiol. Meas. 36 967). Karlen, W.; Petersen, C., L.; Dumont, G., A.; and Mark Ansermino, J. Physiological Measurement, 38(8): 1746-1747. 2017.
Corrigendum: Variability in estimating shunt from single pulse oximetry measurements (2015 Physiol. Meas. 36 967) [pdf]Paper   bibtex
  2016 (5)
Building quality mHealth for low resource settings. Ettinger, K., M.; Pharaoh, H.; Buckman, R., Y.; Conradie, H.; and Karlen, W. Journal of Medical Engineering & Technology, 40(7-8): 431-43. 2016.
Building quality mHealth for low resource settings [pdf]Paper   Building quality mHealth for low resource settings [link]Website   bibtex
Evaluation of cardiac modulation in children in response to apnea/hypopnea using the Phone Oximeterâ?¢. Dehkordi, P.; Garde, A.; Karlen, W.; Petersen, C., L.; Wensley, D.; Dumont, G., A.; and Mark Ansermino, J. Physiological Measurement, 37(2): 187-202. 2016.
Evaluation of cardiac modulation in children in response to apnea/hypopnea using the Phone Oximeterâ?¢ [pdf]Paper   Evaluation of cardiac modulation in children in response to apnea/hypopnea using the Phone Oximeterâ?¢ [link]Website   bibtex
Analysis of the Predictive Potential of Pulse Oximeter Data for Admission. Dunsmuir, D.; Garde, A.; Zhou, G.; Raihana, S.; Huda, T.; Karlen, W.; Dehkordi, P.; Arifeen, S., E.; and Ansermino, M., J. In Proceedings of the 2016 Society for Technology in Anesthesia Annual Meeting, volume 122, pages 75-76, 2016. Anesthesia and analgesia
Analysis of the Predictive Potential of Pulse Oximeter Data for Admission [pdf]Paper   bibtex
A pulse transit time based fusion method for the noninvasive and continuous monitoring of respiratory rate. Ding, X.; Zhang, Y.; Tsang, H., K.; and Karlen, W. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 4240-3, 2016. IEEE
A pulse transit time based fusion method for the noninvasive and continuous monitoring of respiratory rate [pdf]Paper   A pulse transit time based fusion method for the noninvasive and continuous monitoring of respiratory rate [link]Website   bibtex
Respiratory rate and pulse oximetry derived information as predictors of hospital admission in young children in Bangladesh: a prospective observational study. Garde, A.; Zhou, G.; Raihana, S.; Dunsmuir, D.; Karlen, W.; Dekhordi, P.; Huda, T.; Arifeen, S., E.; Larson, C.; Kissoon, N.; Dumont, G., A.; and Ansermino, J., M. BMJ Open, 6(8): e011094. 2016.
Respiratory rate and pulse oximetry derived information as predictors of hospital admission in young children in Bangladesh: a prospective observational study [pdf]Paper   Respiratory rate and pulse oximetry derived information as predictors of hospital admission in young children in Bangladesh: a prospective observational study [link]Website   bibtex
  2015 (8)
Variability in estimating shunt from single pulse oximetry measurements. Karlen, W.; Petersen, C., L.; Dumont, G., A.; and Ansermino, J., M. Physiological Measurement, 36(5): 967-981. 2015.
Variability in estimating shunt from single pulse oximetry measurements [pdf]Paper   Variability in estimating shunt from single pulse oximetry measurements [link]Website   bibtex
A cohort study of morbidity, mortality and health seeking behavior following rural health center visits by children under 12 in Southwestern Uganda. Wiens, M., O.; Gan, H.; Barigye, C.; Zhou, G.; Kumbakumba, E.; Kabakyenga, J.; Kissoon, N.; Ansermino, J., M.; Karlen, W.; Larson, C., P.; and MacLeod, S., M. PLoS ONE, 10(1): e0118055. 2015.
A cohort study of morbidity, mortality and health seeking behavior following rural health center visits by children under 12 in Southwestern Uganda [pdf]Paper   bibtex
Estimation of Respiratory Rate From Photoplethysmographic Imaging Videos Compared to Pulse Oximetry. Karlen, W.; Garde, A.; Myers, D.; Scheffer, C.; Ansermino, J., M.; and Dumont, G., A. IEEE Journal of Biomedical and Health Informatics, 19(4): 1331-8. 2015.
Estimation of Respiratory Rate From Photoplethysmographic Imaging Videos Compared to Pulse Oximetry [pdf]Paper   Estimation of Respiratory Rate From Photoplethysmographic Imaging Videos Compared to Pulse Oximetry [link]Website   bibtex
Efficiency of respiratory rate measurements: Comment on Black et al., 2015: â??Can simple mobile phone applications provide reliable counts of respiratory rates in sick infants and children? An initial evaluation of three new applicationsâ??. Karlen, W.; Dunsmuir, D.; and Ansermino, J., M. International Journal of Nursing Studies, 52(7): 1279-1280. 2015.
Efficiency of respiratory rate measurements: Comment on Black et al., 2015: â??Can simple mobile phone applications provide reliable counts of respiratory rates in sick infants and children? An initial evaluation of three new applicationsâ?? [pdf]Paper   Efficiency of respiratory rate measurements: Comment on Black et al., 2015: â??Can simple mobile phone applications provide reliable counts of respiratory rates in sick infants and children? An initial evaluation of three new applicationsâ?? [link]Website   bibtex
Medical Devices and Information Communication Technologies for the Base of the Pyramid. Friedman, Z.; and Karlen, W. 11, pages 113-118. Springer International Publishing, 2015.
Medical Devices and Information Communication Technologies for the Base of the Pyramid [pdf]Paper   Medical Devices and Information Communication Technologies for the Base of the Pyramid [link]Website   bibtex
Data Quality in mHealth. Karlen, W. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015.
Data Quality in mHealth [pdf]Paper   bibtex   abstract
Development and Internal Validation of a Predictive Model Including Pulse Oximetry for Hospitalization of Under-Five Children in Bangladesh. Raihana, S.; Dunsmuir, D.; Huda, T.; Zhou, G.; Rahman, Q., S.; Garde, A.; Moinuddin, M.; Karlen, W.; Dumont, G., A.; Kissoon, N.; El Arifeen, S.; Larson, C.; and Ansermino, J., M. PLoS ONE, 10(11): e0143213. 2015.
Development and Internal Validation of a Predictive Model Including Pulse Oximetry for Hospitalization of Under-Five Children in Bangladesh [pdf]Paper   Development and Internal Validation of a Predictive Model Including Pulse Oximetry for Hospitalization of Under-Five Children in Bangladesh [link]Website   bibtex
The Performance of a Mobile Phone Respiratory Rate Counter Compared to the WHO ARI Timer. Gan, H.; Karlen, W.; Dunsmuir, D.; Zhou, G.; Chiu, M.; Dumont, G., A.; and Ansermino, J., M. Journal of Healthcare Engineering, 6(4): 691-704. 2015.
The Performance of a Mobile Phone Respiratory Rate Counter Compared to the WHO ARI Timer [pdf]Paper   The Performance of a Mobile Phone Respiratory Rate Counter Compared to the WHO ARI Timer [link]Website   bibtex
  2014 (12)
Improving the accuracy and efficiency of respiratory rate measurements in children using mobile devices. Karlen, W.; Gan, H.; Chiu, M.; Dunsmuir, D.; Zhou, G.; Dumont, G., A.; and Ansermino, J., M. PLoS ONE, 9(6): e99266. 2014.
Improving the accuracy and efficiency of respiratory rate measurements in children using mobile devices. [pdf]Paper   Improving the accuracy and efficiency of respiratory rate measurements in children using mobile devices. [link]Website   bibtex   abstract   6 downloads
Sharing Vital Signs between mobile phone applications. Karlen, W.; Dumont, G., A.; and Scheffer, C. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 3646-9, 2014.
Sharing Vital Signs between mobile phone applications. [pdf]Paper   Sharing Vital Signs between mobile phone applications. [link]Website   bibtex   abstract   1 download
Mobile Point-of-Care Monitors and Diagnostic Device Design. of Devices, Circuits, and SystemsCRC Press, 2014.
Mobile Point-of-Care Monitors and Diagnostic Device Design [link]Website   bibtex
Sleep Stage Classification in Children Using Photoplethysmogram Pulse Rate Variability. Dehkordi, P.; Garde, A.; Karlen, W.; Wensley, D.; Ansermino, J., M.; and Dumont, G., A. In Computing in Cardiology (CinC), pages 297-300, 2014.
Sleep Stage Classification in Children Using Photoplethysmogram Pulse Rate Variability [pdf]Paper   bibtex
Design of an interactive medical guideline application for community health workers. Karlen, W.; and Scheffer, C. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 1366-1369, 2014.
Design of an interactive medical guideline application for community health workers. [pdf]Paper   bibtex   abstract   2 downloads
Respiratory Rate Assessment from Photoplethysmographic Imaging. Karlen, W.; Garde, A.; Myers, D.; Scheffer, C.; Ansermino, J., M.; and Dumont, G., A. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 5397-400, 2014. IEEE Engineering in Medicine and Biology Society
Respiratory Rate Assessment from Photoplethysmographic Imaging [pdf]Paper   bibtex
Oxygen saturation resolution influences regularity measurements. Garde, A.; Karlen, W.; Dehkordi, P.; Ansermino, J., M.; and Dumont, G., A. Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC),2257-60. 2014.
Oxygen saturation resolution influences regularity measurements. [pdf]Paper   Oxygen saturation resolution influences regularity measurements. [link]Website   bibtex   abstract
Development of a screening tool for sleep disordered breathing in children using the phone oximeterâ?¢. Garde, A.; Dehkordi, P.; Karlen, W.; Wensley, D.; Ansermino, J., M.; and Dumont, G., A. PLoS ONE, 9(11): e112959. 2014.
Development of a screening tool for sleep disordered breathing in children using the phone oximeterâ?¢. [pdf]Paper   Development of a screening tool for sleep disordered breathing in children using the phone oximeterâ?¢. [link]Website   bibtex   abstract
Detrended fluctuation analysis of photoplethysmogram pulse rate intervals in sleep disordered breathing. Dehkordi, P.; Garde, A.; Karlen, W.; Petersen, C., L.; Ansermino, M., J.; and Dumont, A., G. In 2014 IEEE Healthcare Innovation Conference (HIC), pages 323-326, 2014. IEEE Engineering in Medicine and Biology Society
Detrended fluctuation analysis of photoplethysmogram pulse rate intervals in sleep disordered breathing [pdf]Paper   Detrended fluctuation analysis of photoplethysmogram pulse rate intervals in sleep disordered breathing [link]Website   bibtex
Assessing the Quality of Manual Respiratory Rate Measurements using Mobile Devices. Karlen, W.; Wiens, M., O.; Gan, H.; Dunsmuir, D.; Chiu, M.; Dumont, G., A.; and Ansermino, J., M. In Appropriate Healthcare Technologies for Low Resource Settings (AHT 2014), pages 1-4, 2014. IET
Assessing the Quality of Manual Respiratory Rate Measurements using Mobile Devices [pdf]Paper   bibtex   abstract
Estimating respiratory and heart rates from the correntropy spectral density of the photoplethysmogram. Garde, A.; Karlen, W.; Ansermino, J., M.; and Dumont, G., A. PLoS ONE, 9(1): e86427. 2014.
Estimating respiratory and heart rates from the correntropy spectral density of the photoplethysmogram. [pdf]Paper   Estimating respiratory and heart rates from the correntropy spectral density of the photoplethysmogram. [link]Website   bibtex   abstract   32 downloads
Where do pulse oximeter probes break?. Crede, S.; Van der Merwe, G.; Hutchinson, J.; Woods, D.; Karlen, W.; and Lawn, J. Journal of clinical monitoring and computing, 28(3): 309-14. 2014.
Where do pulse oximeter probes break? [pdf]Paper   Where do pulse oximeter probes break? [link]Website   bibtex   abstract
  2013 (8)
Monitoring nociception during general anesthesia with cardiorespiratory coherence. Brouse, C., J.; Karlen, W.; Dumont, G., A.; Myers, D.; Cooke, E.; Stinson, J.; Lim, J.; and Ansermino, J., M. Journal of clinical monitoring and computing, 27(5): 551-60. 2013.
Monitoring nociception during general anesthesia with cardiorespiratory coherence. [pdf]Paper   Monitoring nociception during general anesthesia with cardiorespiratory coherence. [link]Website   bibtex   abstract
Recognition of correct finger placement for photoplethysmographic imaging. Karlen, W.; Lim, J.; Ansermino, J., M.; Dumont, G., A.; and Scheffer, C. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 7480-3, 2013.
Recognition of correct finger placement for photoplethysmographic imaging [pdf]Paper   Recognition of correct finger placement for photoplethysmographic imaging [link]Website   bibtex   abstract   1 download
Detection of the optimal region of interest for camera oximetry. Karlen, W.; Ansermino, J., M.; Dumont, G., A.; and Scheffer, C. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 2263-6, 2013.
Detection of the optimal region of interest for camera oximetry [pdf]Paper   Detection of the optimal region of interest for camera oximetry [link]Website   bibtex   abstract   4 downloads
Pulse rate variability compared with heart rate variability in children with and without sleep disordered breathing. Dehkordi, P.; Garde, A.; Karlen, W.; Wensley, D.; Ansermino, J., M.; and Dumont, G., A. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 6563-6, 2013.
Pulse rate variability compared with heart rate variability in children with and without sleep disordered breathing [pdf]Paper   bibtex
Analysis of Oxygen Saturation in Children with Obstructive Sleep Apnea Using the Phone-Oximeter. Garde, A.; Karlen, W.; Dehkordi, P.; Wensley, D.; Ansermino, J., M.; and Dumont, G., A. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), volume 4, pages 2531-4, 2013.
Analysis of Oxygen Saturation in Children with Obstructive Sleep Apnea Using the Phone-Oximeter [pdf]Paper   bibtex   1 download
Pulse Rate Variability in Children with Disordered Breathing During Different Sleep Stages. Dehkordi, P.; Garde, A.; Karlen, W.; Wensley, D.; Ansermino, J., M.; and Dumont, G., A. In Computing in Cardiology (CinC), volume 40, pages 1015 - 8, 2013. IEEE
Pulse Rate Variability in Children with Disordered Breathing During Different Sleep Stages [pdf]Paper   Pulse Rate Variability in Children with Disordered Breathing During Different Sleep Stages [link]Website   bibtex
Empirical mode decomposition for respiratory and heart rate estimation from the photoplethysmogram. Garde, A.; Karlen, W.; Dehkordi, P.; Ansermino, J., M.; and Dumont, G., A. In Computing in Cardiology (CinC), volume 40, pages 799-802, 2013. IEEE
Empirical mode decomposition for respiratory and heart rate estimation from the photoplethysmogram [pdf]Paper   Empirical mode decomposition for respiratory and heart rate estimation from the photoplethysmogram [link]Website   bibtex   15 downloads
Multiparameter respiratory rate estimation from the photoplethysmogram. Karlen, W.; Raman, S.; Ansermino, J., M.; and Dumont, G., A. IEEE transactions on bio-medical engineering, 60(7): 1946-53. 2013.
Multiparameter respiratory rate estimation from the photoplethysmogram. [pdf]Paper   Multiparameter respiratory rate estimation from the photoplethysmogram. [link]Website   bibtex   abstract   10 downloads
  2012 (10)
The Phone Oximeter for Mobile Spot-Check. Dunsmuir, D.; Petersen, C.; Karlen, W.; Lim, J.; Dumont, G., A.; and Ansermino, J., M. In Abstracts of the 2012 Annual Meeting of the Society for Technology in Anesthesia (STA), volume 115, pages S21, 2012. Anesthesia and analgesia
The Phone Oximeter for Mobile Spot-Check [pdf]Paper   bibtex
Photoplethysmogram Processing Using An Adaptive Single Frequency Phase Vocoder Algorithm. Karlen, W.; Petersen, C.; Gow, J.; Ansermino, J., M.; and Dumont, G., A. pages 31-42. Springer-Verlag, 2012.
Photoplethysmogram Processing Using An Adaptive Single Frequency Phase Vocoder Algorithm [pdf]Paper   bibtex   4 downloads
Usability testing of a prototype Phone Oximeter with healthcare providers in high- and low-medical resource environments. Hudson, J.; Nguku, S., M.; Sleiman, J.; Karlen, W.; Dumont, G., A.; Petersen, C.; Warriner, C., B.; and Ansermino, J., M. Anaesthesia, 67(9): 957-67. 2012.
Usability testing of a prototype Phone Oximeter with healthcare providers in high- and low-medical resource environments [pdf]Paper   Usability testing of a prototype Phone Oximeter with healthcare providers in high- and low-medical resource environments [link]Website   bibtex   abstract
Design challenges for camera oximetry on a mobile phone. Karlen, W.; Lim, J.; Ansermino, J., M.; Dumont, G.; and Scheffer, C. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 2448-51, 1 2012.
Design challenges for camera oximetry on a mobile phone [pdf]Paper   Design challenges for camera oximetry on a mobile phone [link]Website   bibtex   abstract
Photoplethysmogram signal quality estimation using repeated Gaussian filters and cross-correlation. Karlen, W.; Kobayashi, K.; Ansermino, J., M.; and Dumont, G., A. Physiological Measurement, 33(10): 1617-29. 9 2012.
Photoplethysmogram signal quality estimation using repeated Gaussian filters and cross-correlation. [pdf]Paper   Photoplethysmogram signal quality estimation using repeated Gaussian filters and cross-correlation. [link]Website   bibtex   abstract   16 downloads
Real-time cardiorespiratory coherence detects antinociception during general anesthesia. Brouse, C., J.; Karlen, W.; Dumont, G., A.; Myers, D.; Cooke, E.; Stinson, J.; Lim, J.; and Ansermino, J., M. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), volume 2012, pages 3813-6, 1 2012.
Real-time cardiorespiratory coherence detects antinociception during general anesthesia. [pdf]Paper   Real-time cardiorespiratory coherence detects antinociception during general anesthesia. [link]Website   bibtex   abstract
Measuring Adequacy of Analgesia with Cardiorespiratory Coherence. Brouse, C., J.; Karlen, W.; Dumont, G., A.; Myers, D.; Cooke, E.; Stinson, J.; Lim, J.; and Ansermino, J., M. In Abstracts of the 2012 Annual Meeting of the Society for Technology in Anesthesia (STA), volume 115, pages S8, 2012. Anesthesia and analgesia
Measuring Adequacy of Analgesia with Cardiorespiratory Coherence [pdf]Paper   Measuring Adequacy of Analgesia with Cardiorespiratory Coherence [link]Website   bibtex
A Data Fusion Approach for RR estimation from PPG (STA Engineering Challenge). Raman, S.; Brouse, C., J.; Karlen, W.; Dumont, G., A.; and Ansermino, J., M. In Proceedings of the 2012 Society for Technology in Anesthesia Annual Meeting, volume 31, 2012.
A Data Fusion Approach for RR estimation from PPG (STA Engineering Challenge) [pdf]Paper   bibtex   1 download
Adaptive Pulse Segmentation and Artifact Detection in Photoplethysmography for Mobile Applications. Karlen, W.; Ansermino, J., M.; and Dumont, G., A. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 3131-4, 8 2012.
Adaptive Pulse Segmentation and Artifact Detection in Photoplethysmography for Mobile Applications [pdf]Paper   bibtex   abstract   7 downloads
Pulse oximeter plethysmograph variation and its relationship to the arterial waveform in mechanically ventilated children. Chandler, J., R.; Cooke, E.; Petersen, C.; Karlen, W.; Froese, N.; Lim, J.; and Ansermino, J., M. Journal of clinical monitoring and computing, 26(3): 145-51. 6 2012.
Pulse oximeter plethysmograph variation and its relationship to the arterial waveform in mechanically ventilated children. [pdf]Paper   Pulse oximeter plethysmograph variation and its relationship to the arterial waveform in mechanically ventilated children. [link]Website   bibtex   abstract
  2011 (8)
An Adaptive Single Frequency Phase Vocoder For Low-power Heart Rate Detection. Karlen, W.; Petersen, C.; Gow, J.; Ansermino, J., M.; and Dumont, G., A. In BIODEVICES 2011 - Proceedings of the International Conference on Biomedical Electronics and Devices, Rome, Italy, January 26-29, 2011, pages 30-35, 2011. INSTICC Press
An Adaptive Single Frequency Phase Vocoder For Low-power Heart Rate Detection [pdf]Paper   bibtex   abstract   2 downloads
SleepPic. Hardware Developments for a Wearable On-line Sleep and Wake Discrimination System. Karlen, W.; and Floreano, D. In Proc. of the International Conference on Bio-inspired Systems and Signal Processing (BIOSIGNALS), pages 132-7, 2011. SciTePress
SleepPic. Hardware Developments for a Wearable On-line Sleep and Wake Discrimination System [pdf]Paper   bibtex   abstract
Human-centered Phone Oximeter Interface Design for the Operating Room. Karlen, W.; Dumont, G., A.; Petersen, C.; Gow, J.; Lim, J.; Sleiman, J.; and Ansermino, J., M. In Proc. of the Int. Conf. on Health Informatics (HEALTHINF), pages 433-8, 2011. SciTePress - Science and and Technology Publications
Human-centered Phone Oximeter Interface Design for the Operating Room [pdf]Paper   Human-centered Phone Oximeter Interface Design for the Operating Room [link]Website   bibtex   abstract
Location independence in patient monitoring. Karlen, W.; Blackstock, M.; and Ansermino, J., M. In Abstracts of the 2011 Annual Meeting of the Society for Technology in Anesthesia (STA), volume 113, pages S37, 8 2011. Anesthesia and Analgesia
Location independence in patient monitoring [pdf]Paper   Location independence in patient monitoring [link]Website   bibtex   abstract
Automated Validation of Capillary Refill Time Measurements Using Photo-Plethysmogram from a Portable Device for Effective Triage in Children. Karlen, W.; Pickard, A.; Daniels, J.; Kwizera, A.; Ibingira, C.; Dumont, G., A.; and Ansermino, J., M. In 2011 IEEE Global Humanitarian Technology Conference (GHTC), pages 66-71, 10 2011. IEEE
Automated Validation of Capillary Refill Time Measurements Using Photo-Plethysmogram from a Portable Device for Effective Triage in Children [pdf]Paper   Automated Validation of Capillary Refill Time Measurements Using Photo-Plethysmogram from a Portable Device for Effective Triage in Children [link]Website   bibtex   abstract   2 downloads
Respiratory rate estimation using respiratory sinus arrhythmia from photoplethysmography. Karlen, W.; Brouse, C., J.; Cooke, E.; Ansermino, J., M.; and Dumont, G., A. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pages 1201-4, 8 2011.
Respiratory rate estimation using respiratory sinus arrhythmia from photoplethysmography. [pdf]Paper   Respiratory rate estimation using respiratory sinus arrhythmia from photoplethysmography. [link]Website   bibtex   abstract   3 downloads
Wavelet transform cardiorespiratory coherence detects patient movement during general anesthesia. Brouse, C., J.; Karlen, W.; Myers, D.; Cooke, E.; Stinson, J.; Lim, J.; Dumont, G., A.; and Ansermino, J., M. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), volume 2011, pages 6114-7, 8 2011.
Wavelet transform cardiorespiratory coherence detects patient movement during general anesthesia. [pdf]Paper   Wavelet transform cardiorespiratory coherence detects patient movement during general anesthesia. [link]Website   bibtex   abstract
Medical intelligence article: capillary refill time: is it still a useful clinical sign?. Pickard, A.; Karlen, W.; and Ansermino, J., M. Anesthesia and analgesia, 113(1): 120-3. 7 2011.
Medical intelligence article: capillary refill time: is it still a useful clinical sign? [pdf]Paper   Medical intelligence article: capillary refill time: is it still a useful clinical sign? [link]Website   bibtex   abstract
  2010 (4)
Capillary Refill Time Assessment Using a Mobile Phone Application (iRefill). Karlen, W.; Petersen, C.; Pickard, A.; Dumont, G., A.; and Ansermino, J., M. In Proceedings of the 2010 Annual Meeting of the American Society Anesthesiologists, pages A575, 2010. American Society of Anesthesiologists
Capillary Refill Time Assessment Using a Mobile Phone Application (iRefill) [pdf]Paper   Capillary Refill Time Assessment Using a Mobile Phone Application (iRefill) [link]Website   bibtex   abstract
Enhancing pilot performance with a SymBodic system. Karlen, W.; Cardin, S.; Thalmann, D.; and Floreano, D. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), volume 1, pages 6599-602, 1 2010. IEEE Engineering in Medicine and Biology Society
Enhancing pilot performance with a SymBodic system. [pdf]Paper   Enhancing pilot performance with a SymBodic system. [link]Website   bibtex   abstract
Adaptive Sleep-Wake Discrimination for Wearable Devices. Karlen, W.; and Floreano, D. IEEE transactions on bio-medical engineering, 58(4): 920-6. 12 2010.
Adaptive Sleep-Wake Discrimination for Wearable Devices [pdf]Paper   Adaptive Sleep-Wake Discrimination for Wearable Devices [link]Website   bibtex   abstract   3 downloads
CapnoBase: Signal database and tools to collect, share and annotate respiratory signals. Karlen, W.; Turner, M.; Cooke, E.; Dumont, G., A.; and Ansermino, J., M. In Annual Meeting of the Society for Technology in Anesthesia (STA), pages 25, 2010.
CapnoBase: Signal database and tools to collect, share and annotate respiratory signals [pdf]Paper   CapnoBase: Signal database and tools to collect, share and annotate respiratory signals [link]Website   bibtex   abstract
  2009 (3)
Evolutionary Selection of Features for Neural Sleep/Wake Discrimination. Duerr, P.; Karlen, W.; Guignard, J.; and Mattiussi, C. Journal of Artificial Evolution and Applications, 2009: 1-10. 2009.
Evolutionary Selection of Features for Neural Sleep/Wake Discrimination [pdf]Paper   Evolutionary Selection of Features for Neural Sleep/Wake Discrimination [link]Website   bibtex   abstract
Sleep and Wake Classification With ECG and Respiratory Effort Signals. Karlen, W.; Mattiussi, C.; and Floreano, D. IEEE Transactions on Biomedical Circuits and Systems, 3(2): 71-8. 2009.
Sleep and Wake Classification With ECG and Respiratory Effort Signals [pdf]Paper   bibtex   abstract
Adaptive Wake and Sleep Detection for Wearable Systems. Karlen, W. Ph.D. Thesis, 2009.
Adaptive Wake and Sleep Detection for Wearable Systems [pdf]Paper   Adaptive Wake and Sleep Detection for Wearable Systems [link]Website   bibtex   abstract
  2008 (1)
Improving actigraph sleep/wake classification with cardio-respiratory signals. Karlen, W.; Mattiussi, C.; and Floreano, D. In Annual Int. Conference of the IEEE Engineering in Medicine and Biology Society., pages 5262-5, 1 2008. IEEE Engineering in Medicine and Biology Society
Improving actigraph sleep/wake classification with cardio-respiratory signals. [pdf]Paper   Improving actigraph sleep/wake classification with cardio-respiratory signals. [link]Website   bibtex   abstract
  2006 (1)
Robot-animal interaction: Perception and behavior of insbot. Asadpour, M.; Tâche, F.; Caprari, G.; Karlen, W.; and Siegwart, R. International Journal of Advanced Robotic Systems, 3(2): 93-8. 2006.
Robot-animal interaction: Perception and behavior of insbot [pdf]Paper   Robot-animal interaction: Perception and behavior of insbot [link]Website   bibtex   abstract
  2005 (1)
Perception and behavior of InsBot : Robot-Animal interaction issues. Tâche, F.; Asadpour, M.; Caprari, G.; Karlen, W.; and Siegwart, R. In 2005 IEEE International Conference on Robotics and Biomimetics (ROBIO), pages 517-522, 2005. IEEE
Perception and behavior of InsBot : Robot-Animal interaction issues [pdf]Paper   Perception and behavior of InsBot : Robot-Animal interaction issues [link]Website   bibtex   abstract

© Walter Karlen, 2008-2019
last update:14.10.2019