Results 51 to 60 of about 673,192 (251)

Synthesis of Cross-Coupled Filters With Frequency-Dependent Couplings [PDF]

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2017
This paper presents a novel synthesis technique for coupled-resonator filters with frequency-dependent couplings. Unlike the works so far appeared in the literature, the proposed technique is not based on the optimization of a network with assigned topology, but it consists in the explicit synthesis of a folded prototype with frequency-dependent ...
Tamiazzo, Stefano   +1 more
openaire   +1 more source

An automatic sleep disorder detection based on EEG cross-frequency coupling and random forest model

open access: yesJournal of Neural Engineering, 2021
Objective. Sleep disorders are medical disorders of a subject’s sleep architecture and based on their severity, they can interfere with mental, emotional and physical functioning.
S. Dimitriadis   +2 more
semanticscholar   +1 more source

Parametric estimation of cross-frequency coupling

open access: yesJournal of Neuroscience Methods, 2015
Growing experimental evidence suggests an important role for cross-frequency coupling in neural processing, in particular for phase-amplitude coupling (PAC). Although the details of methods to detect PAC may vary, a common procedure to estimate the significance level is the comparison of observed values to those of at least 100 surrogate time series ...
van Wijk, BC   +3 more
openaire   +3 more sources

Misidentifications of specific forms of cross-frequency coupling: three warnings

open access: yesFrontiers in Neuroscience, 2015
Cross-frequency coupling between neural oscillations has received increased attention over the last decade, as it is believed to underlie a number of cognitive operations in different brain systems.
Alexandre eHYAFIL, Alexandre eHYAFIL
doaj   +1 more source

Phase-amplitude coupling is elevated in deep sleep and in the onset zone of focal epileptic seizures

open access: yesFrontiers in Human Neuroscience, 2016
The interactions between different EEG frequency bands have been widely investigated in normal and pathologic brain activity. Phase-amplitude coupling (PAC) is one of the important forms of this interaction where the amplitude of higher frequency ...
Mina Amiri   +3 more
doaj   +1 more source

Evaluation of Phase-Amplitude Coupling in Resting State Magnetoencephalographic Signals: Effect of Surrogates and Evaluation Approach

open access: yesFrontiers in Computational Neuroscience, 2016
Phase-amplitude coupling (PAC) plays an important role in neural communication and computation. Interestingly, recent studies have indicated the presence of ubiquitous PAC phenomenon even during the resting state. Despite the importance of PAC phenomenon,
Bakul Gohel   +6 more
doaj   +1 more source

High-Frequency Hubs of the Ictal Cross-Frequency Coupling Network Predict Surgical Outcome in Epilepsy Patients

open access: yesIEEE transactions on neural systems and rehabilitation engineering, 2021
Seizure generation is thought to be a process driven by epileptogenic networks; thus, network analysis tools can help determine the efficacy of epilepsy treatment.
Chunsheng Li   +3 more
semanticscholar   +1 more source

Corticothalamic phase synchrony and cross-frequency coupling predict human memory formation

open access: yeseLife, 2014
The anterior thalamic nucleus (ATN) is thought to play an important role in a brain network involving the hippocampus and neocortex, which enables human memories to be formed. However, its small size and location deep within the brain have impeded direct
Catherine M Sweeney-Reed   +10 more
doaj   +1 more source

Synthesis Applied 4th-Order Constant Absolute Bandwidth Frequency-Agile Bandpass Filter With Cross-Coupling

open access: yesIEEE Access, 2018
A novel 4th-order cross-coupled electrical tunable bandpass filter with constant absolute bandwidth and high frequency selectivity is proposed. The electric coupling coefficients and the magnetic coupling coefficients of the cross-coupled resonators and ...
Dengyao Tian   +2 more
doaj   +1 more source

Position and Cross-Coupling Factors Estimation for Sliding Mode Current Control Based Position-Sensorless Control of IPMSM

open access: yesIEEE Access, 2022
This paper presents a control method with an estimation method of cross-coupling factors of Interior Permanent Magnet Synchronous Motors (IPMSM) inductance for position-sensorless servo drive systems.
Keita Shimamoto, Toshiyuki Murakami
doaj   +1 more source

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