Artículo
Seeking a fingerprint: analysis of point processes in actigraphy recording
Gudowska Nowak, Ewa; Ochab, Jeremi K.; Oles, Katarzyna; Beldzik, Ewa; Chialvo, Dante Renato
; Domagalik, Aleksandra; Fafrowicz, Magdalena; Marek, Tadeusz; Nowak, Maciej A.; Oginska, Halszka; Szwed, Jerzy; Tyburczyk, Jacek
Fecha de publicación:
05/2016
Editorial:
IOP Publishing
Revista:
Journal of Statistical Mechanics: Theory and Experiment
ISSN:
1742-5468
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Motor activity of humans displays complex temporal fluctuations which can be characterised by scale-invariant statistics, thus demonstrating that structure and fluctuations of such kinetics remain similar over a broad range of time scales. Previous studies on humans regularly deprived of sleep or suffering from sleep disorders predicted a change in the invariant scale parameters with respect to those for healthy subjects. In this study we investigate the signal patterns from actigraphy recordings by means of characteristic measures of fractional point processes. We analyse spontaneous locomotor activity of healthy individuals recorded during a week of regular sleep and a week of chronic partial sleep deprivation. Behavioural symptoms of lack of sleep can be evaluated by analysing statistics of duration times during active and resting states, and alteration of behavioural organisation can be assessed by analysis of power laws detected in the event count distribution, distribution of waiting times between consecutive movements and detrended fluctuation analysis of recorded time series. We claim that among different measures characterising complexity of the actigraphy recordings and their variations implied by chronic sleep distress, the exponents characterising slopes of survival functions in resting states are the most effective biomarkers distinguishing between healthy and sleep-deprived groups.
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Articulos(CCT - ROSARIO)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - ROSARIO
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - ROSARIO
Citación
Gudowska Nowak, Ewa; Ochab, Jeremi K.; Oles, Katarzyna; Beldzik, Ewa; Chialvo, Dante Renato; et al.; Seeking a fingerprint: analysis of point processes in actigraphy recording; IOP Publishing; Journal of Statistical Mechanics: Theory and Experiment; 2016; 5; 5-2016; 1-19
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