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Detection of very low-frequency oscillations of cerebral haemodynamics is influenced by data detrending

Detection of very low-frequency oscillations of cerebral haemodynamics is influenced by data detrending

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Prüfsumme: MD5:a70412eeb3c95d7e5edd90baa652c2ea

MÜLLER, Thomas, Jens TIMMER, Matthias REINHARD, Eckard OEHM, Andreas HETZEL, 2003. Detection of very low-frequency oscillations of cerebral haemodynamics is influenced by data detrending. In: Medical & Biological Engineering & Computing. 41(1), pp. 69-74. ISSN 0140-0118. eISSN 1741-0444. Available under: doi: 10.1007/BF02343541

@article{Muller2003Detec-27254, title={Detection of very low-frequency oscillations of cerebral haemodynamics is influenced by data detrending}, year={2003}, doi={10.1007/BF02343541}, number={1}, volume={41}, issn={0140-0118}, journal={Medical & Biological Engineering & Computing}, pages={69--74}, author={Müller, Thomas and Timmer, Jens and Reinhard, Matthias and Oehm, Eckard and Hetzel, Andreas} }

eng 2014-04-14T12:10:38Z Oehm, Eckard deposit-license Recent studies were investigated that report spontaneous oscillations of cerebral perfusion in the very low-frequency range (0.01-0.04 Hz), emphasising details of spectral estimation. The effects of different spectral estimation procedures were compared, using simulated and clinical data. It was shown that data detrending, as used in many studies, can lead to an artifactual peak in the very low-frequency region of estimated power spectra, indicating that the peak cannot be taken as evidence of physiological oscillations. A quantitative, reliable method is described that can be used to assess very low-frequency oscillations. Using the method, very low-frequency oscillations were found in ten out of 17 healthy adults measured with transcranial Doppler (average frequency, 0.021 +/- 0.007 Hz, mean +/- SD), confirming earlier findings based on visual inspection of data. Reinhard, Matthias Oehm, Eckard 2014-04-14T12:10:38Z Hetzel, Andreas Müller, Thomas Detection of very low-frequency oscillations of cerebral haemodynamics is influenced by data detrending Müller, Thomas Hetzel, Andreas Timmer, Jens Reinhard, Matthias Timmer, Jens Medical & biological engineering & computing ; 41 (2003), 1. - S. 69-74 2003

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