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Home arrow Departments arrow Theoretical Methods arrow Department Projects arrow Effects of sleep disturbances on day-time neurocognitive performance in patients with stroke
Effects of sleep disturbances on day-time neurocognitive performance in patients with stroke

Other project  nr. MZ 2012/56-SAV-6

Duration of the project: 07/2013 - 12/2015

Principal investigator: Ing. Mgr. Roman Rosipal, PhD.


Sleep deprivation, whether from disorder or lifestyle, whether acute or chronic, poses a significant risk in day-time cognitive performance, excessive somnolence, impaired attention or decreased level of motor abilities. Sleep deprivation is closely related to sleep fragmentation often associated with short several second long arousals. Although limited studies of partial sleep restriction and sleep fragmentation have revealed important sleep indices leading to cognitive deficits, a challenging question how a typical, good quality, structure of sleep should look like remains open. To improve these results the project will investigate and evaluate a novel probabilistic sleep model. In a preliminary series of tests on healthy subjects it has been shown that the model contains significantly more objective information about external measures of the sleep quality than the traditional sleep staging. Patients with specific cerebral lesions will be studied in the project. It is well-known that targeted patients are strongly vulnerable to sleep disturbances that often lead to deficits in their day-time cognitive and attentional performance. Experimental studies with such patients and with focus on relating their sleep patterns and disturbances with a day-time performance are limited and so far have not been carried out in Slovakia. It is expected that the project will deliver not only new academic research results but also important clinical knowledge. 



Rosipal R., Trejo L.J., Zaidel E.- Atomic Decomposition of EEG for Mapping Cortical Activation. TML: Tensor Methods for Machine Learning, ECML/PKDD 2013 Workshop, Prague, 2013.  



ŠKOVIERA, Radoslav - ROŠŤÁKOVÁ, Zuzana - KRAKOVSKÁ, Anna - ROSIPAL, Roman. Spectral and complexity characteristics of sleep EEG following ischemic stroke. In YBERC 2014 : Proceedings of the 6th International Young Biomedical Engineers and Researchers Conference. Editors E. Cocherová, J. Púčik. - Bratislava : FEI STU, 2014, p. 108-114. ISBN 978-80-971697-0-1.


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