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Reproducibility and sensitivity of detecting brain activity by simultaneous electroencephalography and near-infrared spectroscopy

Biallas, Martin ; Trajkovic, Ivo ; Haensse, Daniel ; Marcar, Valentine ; Wolf, Martin

In: Experimental Brain Research, 2012, vol. 222, no. 3, p. 255-264

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    Titre
    • Reproducibility and sensitivity of detecting brain activity by simultaneous electroencephalography and near-infrared spectroscopy
    Auteur
    • Biallas, Martin. Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091, Zurich, Switzerland
    • Trajkovic, Ivo. Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091, Zurich, Switzerland
    • Haensse, Daniel. Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091, Zurich, Switzerland
    • Marcar, Valentine. Institute of Psychology, Neuropsychology, University of Zurich, Zurich, Switzerland
    • Wolf, Martin. Biomedical Optics Research Laboratory, Division of Neonatology, Department of Obstetrics and Gynecology, University Hospital Zurich, 8091, Zurich, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Experimental Brain Research, 2012, vol. 222, no. 3, p. 255-264. Springer-Verlag
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:319296
    Summary
    The aims were (1) to determine the sensitivity and reproducibility to detect the hemodynamic responses and optical neuronal signals to brain stimulation by near-infrared spectroscopy (NIRS) and evoked potentials by electroencephalography (EEG) and (2) to test the effect of novel filters on the signal-to-noise ratio. This was achieved by simultaneous NIRS and EEG measurements in 15 healthy adults during visual stimulation. Each subject was measured three times on three different days. The sensitivity of NIRS to detect hemodynamic responses was 55.2% with novel filtering and 40% without. The reproducibility in single subjects was low. For the EEG, the sensitivity was 86.4% and the reproducibility 57.1%. An optical neuronal signal was not detected, although novel filtering considerably reduced noise