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dc.contributor.authorMaitín, Ana María
dc.contributor.authorPerezzan, Ramiro
dc.contributor.authorHerráez Aguilar, Diego
dc.contributor.authorSerrano, José Ignacio
dc.contributor.authorDel Castillo, María Dolores
dc.contributor.authorArroyo, Aída
dc.contributor.authorAndreo, Jorge
dc.contributor.authorRomero Muñoz, Juan Pablo 
dc.date.accessioned2021-01-12T13:00:00Z
dc.date.available2021-01-12T13:00:00Z
dc.date.issued2020
dc.identifier.issn2076-3417spa
dc.identifier.urihttp://hdl.handle.net/10641/2150
dc.description.abstractBackground: Brain connectivity has shown to be a key characteristic in the study of both Parkinson’s Disease (PD) and the response of the patients to the dopaminergic medication. Time series analysis has been used here for the first time to study brain connectivity changes during motor activation in PD. Methods: A 64-channel EEG signal was registered during unilateral motor activation and resting-state in 6 non-demented PD patients before and after the administration of levodopa and in 6 matched healthy controls. Spectral entropy correlation, coherence, and interhemispheric divergence differences among PD patients and controls were analyzed under the assumption of stationarity of the time series. Results: During the motor activation test, PD patients showed an increased correlation coefficient (both hands p < 0.001) and a remarkable increase in coherence in all frequency range compared to the generalized reduction observed in controls (both hands p < 0.001). The Kullback–Leibler Divergence (KLD) of the Spectral Entropy between brain hemispheres was observed to increase in controls (right hand p = 0.01; left hand p = 0.015) and to decrease in PD patients (right hand p = 0.02; left hand p = 0.002) with motor activation. Conclusions: Our results suggest that the oscillatory activity of the different cortex areas within healthy brains is relatively independent of the rest. PD brains exhibit a stronger connectivity which grows during motor activation. The levodopa mitigates this anomalous performance.spa
dc.language.isoengspa
dc.publisherApplied Sciencesspa
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectParkinson’s Diseasespa
dc.subjectElectroencephalographyspa
dc.subjectEntropyspa
dc.subjectConnectivityspa
dc.subjectLevodopaspa
dc.titleTime Series Analysis Applied to EEG Shows Increased Global Connectivity during Motor Activation Detected in PD Patients Compared to Controls.spa
dc.typearticlespa
dc.description.versionpost-printspa
dc.rights.accessRightsopenAccessspa
dc.description.extent2,22 MBspa
dc.identifier.doi10.3390/app1 1010015spa
dc.relation.publisherversionhttps://www.mdpi.com/2076-3417/11/1/15spa


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