Martin Biallas

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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(More)
Hand motor tasks are frequently used to assess impaired motor function in neurology and neurorehabilitation. Assessments can be varied by means of hand laterality, i.e. unimanual or bimanual performance, as well as by means of task complexity, i.e. different degrees ranging from simple to complex sequence tasks. The resulting functional activation in human(More)
BACKGROUND AND PURPOSE Sleep-disordered breathing (SDB) negatively impacts stroke outcome. Near-infrared spectroscopy showed the acute cerebral hemodynamic effects of SDB. METHODS Eleven patients (7 men, age 61±13 years) with acute/subacute middle cerebral artery stroke (National Institutes of Health Stroke Scale score 10±7) and SDB (apnea-hypopnea index(More)
OBJECTIVE Periodic leg movements during sleep (PLMS) have been shown to be associated with changes in autonomic and hemispheric activities. Near infrared spectroscopy (NIRS) assesses hemodynamic changes linked to hemispheric/cortical activity. We applied NIRS to test whether cerebral hemodynamic alterations accompany PLMS. METHODS Three PLMS patients(More)
In this study 14 healthy term newborns (postnatal mean age 2.1 days) underwent photic stimulation during sleep on two different days. Near-infrared spectroscopy (NIRS) and electroencephalography (EEG) was acquired simultaneously. The aims of the study were: to determine (i) the sensitivity and (ii) the repeatability of NIRS to detect the hemodynamic(More)
Tissue oxygen saturation (StO(2)), a potentially important parameter in clinical practice, can be measured by near infrared spectroscopy (NIRS). Various devices use the multi-distance approach based on the diffusion approximation of the radiative transport equation [1, 2]. When determining the absorption coefficient (μ (a)) by the slope over multiple(More)
Schweizerische Städte rechnen mit Bevölkerungszuwachs zwischen 10–25 % bis zum Jahr 2030. Aufgrund des Platzmangels sind in der Schweiz nur ökologie-bewusste Verdichtungen möglich. Der demografische Wandel ist ein anderer spürbarer Trend. Babyboomers kommen in das Pensionsalter und die Lebenserwartung steigt kontinuierlich weiter bei gleichbleibender Zahl(More)
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