Oldřich Ondráček

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Ability of humans to maintain balance in an upright stance and during movement activities is one of the most natural skills affecting everyday life. This ability progressively deteriorates with increasing age, and balance impairment, often aggravated by age-related diseases, can result in falls that adversely impact the quality of life. Falls represent(More)
Spectral analysis of heart rate variability (HRV) signals is widely used method for assessment of autonomous nervous system modulation with attempt to determine contribution of sympathetic and parasympathetic branches. Since primary goal is to estimate neural drive to sinus node noninvasively, signal processing methods have been developed to handle beat(More)
Dispersion in spectral domain optical coherence tomography (SD OCT) system cause a degradation of point spread function (peak broadening) after FFT of the spectrum with the increase of the optical path distance between an object and reference arm. Different sources of dispersion and methods for the compensation are shown. 1 INTRODUCTION Optical coherence(More)
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