spectral_connectivityis a Python software package that computes multitaper spectral estimates and frequency-domain brain connectivity measures such as coherence, spectral granger causality, and the phase lag index using the multitaper Fourier transform. Although there are other Python packages that do this...
Spectral kernel methods are techniques for mapping data into a coordinate system that efficiently reveals the geometric structure-in particular, the "connectivity"-of the data. These methods depend on tuning parameters. We analyze the dependence of the method on these tuning parameters. We focus on...
Spectral analysis and neural field theory are used to investigate the role of local connections in brain connectivity matrices (CMs) that quantify connectivity between pairs of discretized brain regions. This work investigates how the common procedure of omitting such self-connections (i.e., the ...
摘要: Li, Shiu, Chan and Chang [On the spectral radius of graphs with connectivity at most k, J. Math. Chem., 46 (2009), 340-346] studied the spectral radius of graphs of order n with κ( G) ≤ kand showed...关键词: connectivity spectral radius ...
The experiments yield hundreds of spectra, requiring Perez to manually insert and organize the data into spreadsheets, a process that can take multiple hours. However with Origin's LabVIEW connectivity, he was able to create a LabVIEW VI that collects the several hundred megabytes of data files ...
Unaltered EEG spectral power and functional connectivity in REM microstates in frequent nightmare recallers: Are nightmares really a REM parasomnia? 喜欢 0 阅读量: 36 作者:GVD Wijk,B Blaskovich,Y Farahzadi,P Simor 摘要: Background Frequent nightmares show signs of hyperarousal in NREM sleep. ...
Electroencephalography (EEG) has shown differences in spectral, functional connectivity and network measures between typical Alzheimer's disease (AD) and controls. Subjects with posterior cortical atrophy (PCA) show more severe visuospatial and perceptual deficits compared to typical AD. The aim of ...
We show that the optimal univariate projection based on spectral connectivity converges to the vector normal to the maximum margin hyperplane through the data, as the scaling parameter is reduced to zero. This establishes a connection between connectivity as measured by spectral graph theory and ...
Recent resting-state functional connectivity fMRI (RS-fcMRI) research has demonstrated that head motion during fMRI acquisition systematically influences connectivity estimates despite bandpass filtering and nuisance regression, which are intended to reduce such nuisance variability. We provide evidence that the...
However, comparison of spectral and connectivity features are not yet conducted in the aspect of stability. In this paper, we present contrast between spectral and connectivity features for EEG based authentication with signals measured in different days. Spectral features are represented as power ...