Search results for "Partial Directed Coherence"

showing 2 items of 12 documents

Increased Gamma Connectivity in the Human Prefrontal Cortex during theBereitschaftspotential

2017

The Bereitschaftspotential (BP) is a slow negative cortical potential preceding voluntary movement. Since movement preparation is dependent upon the synchronous activity of a variety of neurons, BP may develop through the exchange of information among motor-related neurons. However, the relationship between BP and information flow is not yet well-known. In the present study, we aimed to investigate how the connectivity in the prefrontal cortex (PFC) changes during the occurrence of BP. Electrocorticography (ECoG) was recorded in five patients with epilepsy. The subjects performed self-paced hand grasping. We compared the intraregional connectivity between PFC and non-PFC regions using parti…

beta and gamma bandelectrocorticography (ECoG)Bereitschaftspotential; readiness potential; electrocorticography(ECoG); connectivity; Partial directed coherence (PDC); prefrontalcortex; movement preparation; beta and gamma band050105 experimental psychologylcsh:RC321-57103 medical and health sciencesBehavioral Neuroscience0302 clinical medicinemedicine0501 psychology and cognitive sciencesPrefrontal cortexlcsh:Neurosciences. Biological psychiatry. NeuropsychiatryElectrocorticographyBiological PsychiatryOriginal Researchprefrontal cortexreadiness potentialmedicine.diagnostic_testmovement preparation05 social sciencesBereitschaftspotentialPsychiatry and Mental healthNeuropsychology and Physiological PsychologyNeurologynervous systemBereitschaftspotentialconnectivityPsychologyNeuroscienceGamma bandPartial directed coherence (PDC)030217 neurology & neurosurgeryNeuroscience
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Wiener-Granger Causality in Network Physiology with Applications to Cardiovascular Control and Neuroscience

2016

Since the operative definition given by C. W. J. Granger of an idea expressed by N. Wiener, the Wiener–Granger causality (WGC) has been one of the most relevant concepts exploited by modern time series analysis. Indeed, in networks formed by multiple components, working according to the notion of segregation and interacting with each other according to the principle of integration, inferring causality has opened a window on the effective connectivity of the network and has linked experimental evidences to functions and mechanisms. This tutorial reviews predictability improvement, information-based and frequency domain methods for inferring WGC among physiological processes from multivariate…

nonlinear dynamicComputer scienceReliability (computer networking)Biomedical signal processingPhysiologyCardiovascular controldynamical systemdirectionalityGranger causalitymultivariate regression modelingtime series analysiPredictabilityTime seriesElectrical and Electronic EngineeringStatistical hypothesis testingbusiness.industryheart rate variabilitytransfer entropypartial directed coherencepredictioncoupling strengthCausalityconditional mutual informationFrequency domainspectral decompositionSettore ING-INF/06 - Bioingegneria Elettronica E InformaticaArtificial intelligencebusinesscomplexityNeuroscience
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