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Performance function for equally-spaced digital spectrum analysis
IEEE Transactions on Instrumentation and Measurement, 2001A different procedure for evaluating the errors introduced by the equally-spaced sampling technique in the asynchronous spectral analysis of a periodic signal was introduced. It is based on the assumption that the initial sampling instant can be randomized so that each estimated spectral component can be considered a random variable characterized by ...
D. Mirri +3 more
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Spatial and temporal spectra of periodic functions for spectrum analysis
Applied Optics, 1984Both the spatial and the temporal spectra of reference signals used in interferometric spectrum analyzers affect the system performance. We define a class of bandlimited reference signals that have N discrete frequency components of equal magnitude. We show that the system performance is primarily determined by the aperture weighting function and is ...
A, VanderLugt, A M, Bardos
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A Multi-Factorial Assessment of Functional Human Autistic Spectrum Brain Network Analysis
2021 IEEE International Conference on Bioinformatics and Biomedicine (BIBM), 2021The variability of the results obtained by the statistical analysis of functional human brain networks depend on multiple factors such as: the source of the fMRI data, the brain parcellations, the graph theory measures, and the threshold values applied to the functional connectivity matrices to obtain adjacency matrices of sparse graphs. Therefore, the
Oswaldo, Artiles, Fahad, Saeed
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Autonomic function in narcolepsy: power spectrum analysis of heart rate variability
Journal of Neurology, 1997Ten narcoleptic patients that had never been treated previously and ten healthy volunteers of comparable age underwent 48-h polygraphic recording to assess the effects of wakefulness and sleep on beat-to-beat heart rate variability by means of power spectrum analysis.
FERINI STRAMBI L. +6 more
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Narratives of children with high-functioning autism spectrum disorder: A meta-analysis
Research in Developmental Disabilities, 2016The aim of this meta-analysis was to analyze the narrative performance of children and adolescents with high-functioning Autism Spectrum Disorders (ASD) in terms of microstructure, macrostructure and internal state language.A systematic literature search yielded 24 studies that met the predetermined inclusion criteria.
Inmaculada, Baixauli +3 more
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Diffusion Time Spectrum Analysis Observation of Aquaporin Functional Dynamics
ISMRM Annual MeetingThe function of water molecule exchange on the plasma membrane by aquaporins was evaluated using HEK293T cultured cells. Time-dependent diffusion magnetic resonance imaging (MRI), in which diffusion time (DT) was varied in 14 steps from 13 to 784 ms, was used to observe differences in water molecules and the permeability of the cell membrane with and ...
Ayano Oku +9 more
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International Journal of Neural Systems, 2014
Sources of noise in resting-state fMRI experiments include instrumental and physiological noises, which need to be filtered before a functional connectivity analysis of brain regions is performed. These noisy components show autocorrelated and nonstationary properties that limit the efficacy of standard techniques (i.e.
PAOLO PIAGGI +5 more
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Sources of noise in resting-state fMRI experiments include instrumental and physiological noises, which need to be filtered before a functional connectivity analysis of brain regions is performed. These noisy components show autocorrelated and nonstationary properties that limit the efficacy of standard techniques (i.e.
PAOLO PIAGGI +5 more
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Analysis of the Photodetector Array Spectrum Using the Influence Function
Russian Microelectronics, 2001The conversion of an optical image to a carrier flow in the semiconductor substrate of a photodetector array is accomplished using the Green function method. Asymptotic solutions for large and small arguments are analyzed. Among them are intermediate asymptotic self-similar solutions that are suitable for the transition to the spectral range.
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Cerebral Cortex
Abstract Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by social and behavioral impairments, emerging in early childhood with unclear causes. The primary aim of this study is to investigate shifts in the functional gradients underlying hierarchical brain network organization in ASD and to assess their potential ...
Guangrong, Wu +7 more
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Abstract Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by social and behavioral impairments, emerging in early childhood with unclear causes. The primary aim of this study is to investigate shifts in the functional gradients underlying hierarchical brain network organization in ASD and to assess their potential ...
Guangrong, Wu +7 more
openaire +2 more sources