Results 11 to 20 of about 309,712 (273)
Association of EEG-assessed phase lag index with cognitive dysfunction and seizure occurrence in children with epilepsy. [PDF]
Am J Transl ResTo investigate the association of EEG-assessed Phase Lag Index (PLI) with cognitive dysfunction and seizure occurrence in pediatric patients with epilepsy.A retrospective cohort study enrolled 117 children with epilepsy aged 4 to 16 years. Participants were categorized into Normal PLI (n=53) and Abnormal PLI (n=64) groups based on EEG-assessed PLI ...
Nie W +5 more
europepmc +3 more sources
Weighted phase lag index and graph analysis: preliminary investigation of functional connectivity during resting state in children. [PDF]
Comput Math Methods Med, 2012 Resting state functional connectivity of MEG data was studied in 29 children (9-10 years old). The weighted phase lag index (WPLI) was employed for estimating connectivity and compared to coherence. To further evaluate the network structure, a graph analysis based on WPLI was used to determine clustering coefficient (C) and betweenness centrality (BC ...
Ortiz E +5 more
europepmc +5 more sources
NeuroImage, 2012 We introduce a directed phase lag index to investigate the spatial and temporal pattern of phase relations of oscillatory activity in a model of macroscopic structural and functional brain networks. Direction of information flow was determined with the directed phase lag index (dPLI) defined as the probability that the instantaneous phase of X was ...
Stam, C.J., van Straaten, E.C.W.
openaire +5 more sources
Relationship between phase lag index measured by electroencephalography and cognitive dysfunction in patients with cerebral small vessel disease. [PDF]
Am J Transl ResLiu D, Tong X, Cao Z, Shi S, Ma L.
europepmc +3 more sources
The Evolution of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GX 339--4 during the 2006/2007 Outburst [PDF]
, 2017 We present the evolution of the phase lags associated with the type-C QPO in GX 339--4 during the rising phase of the 2006/2007 outburst. We find that the phase lags at the QPO frequency are always positive (hard), and show very different behavior ...
Altamirano, Diego +6 more
core +15 more sources
The Astrophysical Journal, 2023 We investigate deviations in the mean phase travel time of acoustic waves preceding the emergence of 46 large active regions observed by the Helioseismic and Magnetic Imager.
John T. Stefan, Alexander G. Kosovichev
doaj +1 more source
Frontiers in Behavioral Neuroscience, 2021 Accumulating evidence emphasizes the relevance of oscillatory synchrony in memory consolidation during sleep. Sleep spindles promote memory retention, especially when occurring in the depolarized upstate of slow oscillation (SO).
Risto Halonen +3 more
doaj +1 more source
Frontiers in Aging Neuroscience, 2023 IntroductionMaintaining high cognitive functions is desirable for “wellbeing” in old age and is particularly relevant to a super-aging society. According to their individual cognitive functions, optimal intervention for older individuals facilitates the ...
Mayuna Tobe +11 more
doaj +1 more source
Frontiers in Neuroscience, 2020 Phase synchronization measures are widely used for investigating inter-regional functional connectivity (FC) of brain oscillations, but which phase synchronization measure should be chosen for a given experiment remains unclear. Using neuromagnetic brain
Kenji Yoshinaga +8 more
doaj +1 more source
Phase lag index: Assessment of functional connectivity from multi channel EEG and MEG with diminished bias from common sources [PDF]
Human Brain Mapping, 2007 AbstractObjective:To address the problem of volume conduction and active reference electrodes in the assessment of functional connectivity, we propose a novel measure to quantify phase synchronization, the phase lag index (PLI), and compare its performance to the well‐known phase coherence (PC), and to the imaginary component of coherency (IC).Methods ...
Stam, Cornelis J. +2 more
openaire +4 more sources