Results 21 to 30 of about 309,712 (273)

Comparison of bispectral index and phase lag entropy during general anesthesia: Sevoflurane or propofol anesthesia

open access: yesMedicine, 2022
Background: Phase-lag entropy (PLE) based on functional connectivity between different regions of the brain may be superior to conventional depth of anesthesia (DoA) methods for monitoring changes in consciousness. However, few studies have compared the PLE and bispectral index (BIS) methods for monitoring consciousness during ...
Jae Hwa Yoo   +9 more
openaire   +2 more sources

Phase Synchronization in Temperature and Precipitation Records [PDF]

open access: yes, 2002
We study phase synchronization between atmospheric variables such as daily mean temperature and daily precipitation records. We find significant phase synchronization between records of Oxford and Vienna as well as between the records of precipitation ...
Armin Bunde   +13 more
core   +3 more sources

A Method for Estimating Longitudinal Change in Motor Skill from Individualized Functional-Connectivity Measures

open access: yesSensors, 2022
Pragmatic, objective, and accurate motor assessment tools could facilitate more frequent appraisal of longitudinal change in motor function and subsequent development of personalized therapeutic strategies.
Nader Riahi, Ryan D’Arcy, Carlo Menon
doaj   +1 more source

Electroencephalographic effects of ketamine on power, cross-frequency coupling and connectivity in the alpha bandwidth

open access: yesFrontiers in Systems Neuroscience, 2014
Recent studies of propofol-induced unconsciousness have identified characteristic properties of electroencephalographic alpha rhythms that may be mediated by drug activity at -aminobutyric acid (GABA) receptors in the thalamus.
Stefanie eBlain-Moraes   +4 more
doaj   +1 more source

Graph Analysis of EEG Functional Connectivity Networks During a Letter-Speech Sound Binding Task in Adult Dyslexics

open access: yesFrontiers in Psychology, 2021
We performed an EEG graph analysis on data from 31 typical readers (22.27 ± 2.53 y/o) and 24 dyslexics (22.99 ± 2.29 y/o), recorded while they were engaged in an audiovisual task and during resting-state.
Gorka Fraga-González   +14 more
doaj   +1 more source

Reliability of Functional Connectivity of Electroencephalography Applying Microstate-Segmented Versus Classical Calculation of Phase Lag Index [PDF]

open access: yesBrain Connectivity, 2016
Connectivity analysis characterizes normal and altered brain function, for example, using the phase lag index (PLI), which is based on phase relations. However, reliability of PLI over time is limited, especially for single- or regional-link analysis. One possible cause is repeated changes of network configuration during registration.
Hatz Florian   +5 more
openaire   +2 more sources

Impaired Self-Referential Cognitive Processing in Bipolar Disorder: A Functional Connectivity Analysis

open access: yesFrontiers in Aging Neuroscience, 2022
Patients with bipolar disorder have deficits in self-referenced information. The brain functional connectivity during social cognitive processing in bipolar disorder is unclear. Electroencephalogram (EEG) was recorded in 23 patients with bipolar disorder
Jian Zhang   +10 more
doaj   +1 more source

The patent foramen ovale may alter migraine brain activity: A pilot study of electroencephalography spectrum and functional connectivity analysis

open access: yesFrontiers in Molecular Neuroscience, 2023
BackgroundA link has been shown between patent foramen ovale (PFO) and migraine, particularly migraine with aura. However, it is unknown if PFO might cause migraine by altering cortical excitability and neural network, which may lower the threshold of ...
Xiangyu Lei   +9 more
doaj   +1 more source

Monitoring of anesthetic depth and EEG band power using phase lag entropy during propofol anesthesia

open access: yesBMC Anesthesiology, 2020
Background Phase lag entropy (PLE) is a novel anesthetic depth indicator that uses four-channel electroencephalography (EEG) to measure the temporal pattern diversity in the phase relationship of frequency signals in the brain.
Hye Won Shin   +7 more
doaj   +1 more source

High Phase Synchronization in Alpha Band Activity in Older Subjects With High Creativity

open access: yesFrontiers in Human Neuroscience, 2020
Despite growing evidence that high creativity leads to mental well-being in older individuals, the neurophysiological bases of creativity remain elusive. Creativity reportedly involves multiple brain areas and their functional interconnections.
Sou Nobukawa   +7 more
doaj   +1 more source

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