Sökning: "Physiological signal"

Visar resultat 6 - 10 av 209 avhandlingar innehållade orden Physiological signal.

  1. 6. Respiratory monitoring using reflection mode photoplethysmography : clinical and physiological aspects

    Författare :Lena Nilsson; Robert Hahn; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Photoplethysmography (PPG) is a non-invasive optical technique for monitoring variations in blood volume and blood flow in skin and other tissues. Light from a light-emitting diode is absorbed, scattered and reflected from the skin, and detected by a photodetector as a plethysmogram. The plethysmogram contains variations of different frequencies. LÄS MER

  3. 7. Adaptive signal processing of surface electromyogram signals

    Författare :Nils Östlund; Stefan Karlsson; Jun Yu; Björn Gerdle; Leif Sörnmo; Umeå universitet; []
    Nyckelord :Signalbehandling; electromyography; signal processing; Signalbehandling; biomedicinsk strålningsvetenskap; Biomedical Radiation Science;

    Sammanfattning : Electromyography is the study of muscle function through the electrical signals from the muscles. In surface electromyography the electrical signal is detected on the skin. The signal arises from ion exchanges across the muscle fibres’ membranes. LÄS MER

  4. 8. Gait Event Detection in the Real World

    Författare :Siddhartha Khandelwal; Nicholas Wickström; Thorsteinn Rögnvaldsson; Brian Caulfield; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gait analysis; gait event detection; wearable sensors; accelerometers;

    Sammanfattning : Healthy gait requires a balance between various neuro-physiological systems and is considered an important indicator of a subject's physical and cognitive health status. As such, health-related applications would immensely benefit by performing long-term or continuous monitoring of subjects' gait in their natural environment and everyday lives. LÄS MER

  5. 9. On the Selection and Classification of Features for Speaker Recognition

    Författare :Guillermo Garcia; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; feature extraction; mutual information; estimation; phase information.; Bayes procedures; speaker recognition; discriminative modeling;

    Sammanfattning : Speaker recognition is theprocess of automatically recognizing who is spea- king based on information provided by speech signals. Speakerrecognition still has many unsolved problems; each person has aunique voice that makes him or her different from other people, andto recognize who is talking based only on the speech is not an easytask. LÄS MER

  7. 10. Perspectives of Deep Learning for Neonatal Sepsis Detection

    Författare :Antoine Honoré; Saikat Chatterjee; Eric Herlenius; Guy Carrault; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Deep Learning; Neonatal Sepsis Detection; Normalizing Flows; Hidden Markov Models.; Djupinlärningsmodeller; Neonatal Sepsis detektion; Normaliserande Flöden; Dolda Markov modellerna.;

    Sammanfattning : Newborns, whether born at term or preterm, are highly vulnerable and face life-threatening situations during their initial weeks of life every year. Even with hospitalization in a neonatal intensive care unit (NICU) and careful clinical monitoring, identifying infection-related incidents like sepsis is a challenging task. LÄS MER