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187 Results Found

  • Article
  • Open Access
14 Citations
3,223 Views
15 Pages

18 June 2024

To effectively detect motion sickness induced by virtual reality environments, we developed a classification model specifically designed for visually induced motion sickness, employing a phase-locked value (PLV) functional connectivity matrix and a C...

(This article belongs to the Section Intelligent Sensors)
  • Article
  • Open Access
5 Citations
3,044 Views
14 Pages

23 October 2022

Ketogenic diets (KDs) are a promising alternative therapy for pediatric refractory epilepsy. Several predictors of KD responsiveness have been identified, including biochemical parameters, seizure types, and electroencephalography (EEG) examinations....

(This article belongs to the Section Clinical Nutrition)
  • Article
  • Open Access
2 Citations
4,163 Views
23 Pages

EEG-Driven Arm Movement Decoding: Combining Connectivity and Amplitude Features for Enhanced Brain–Computer Interface Performance

  • Hamidreza Darvishi,
  • Ahmadreza Mohammadi,
  • Mohammad Hossein Maghami,
  • Meysam Sadeghi and
  • Mohamad Sawan

Brain–computer interfaces (BCIs) translate electroencephalography (EEG) signals into control commands, offering potential solutions for motor-impaired individuals. While traditional BCI studies often focus solely on amplitude variations or inte...

  • Feature Paper
  • Article
  • Open Access
3 Citations
2,282 Views
15 Pages

Brain–Computer Interface Based on PLV-Spatial Filter and LSTM Classification for Intuitive Control of Avatars

  • Kevin Martín-Chinea,
  • José Francisco Gómez-González and
  • Leopoldo Acosta

This study researches the combination of the brain–computer interface (BCI) and virtual reality (VR) in order to improve user experience and facilitate control learning in a safe environment. In addition, it assesses the applicability of the ph...

(This article belongs to the Special Issue EEG Analysis and Brain–Computer Interface (BCI) Technology)
  • Article
  • Open Access
1,868 Views
23 Pages

Background/Objectives: Epilepsy is a common neurological disorder that not only severely impacts patients’ health but also imposes a significant burden on families and society. However, its pathogenesis remains unclear. Astrocytes play a crucia...

(This article belongs to the Section Computational Neuroscience, Neuroinformatics, and Neurocomputing)
  • Article
  • Open Access
47 Citations
10,284 Views
15 Pages

EEG-Based Sleep Staging Analysis with Functional Connectivity

  • Hui Huang,
  • Jianhai Zhang,
  • Li Zhu,
  • Jiajia Tang,
  • Guang Lin,
  • Wanzeng Kong,
  • Xu Lei and
  • Lei Zhu

11 March 2021

Sleep staging is important in sleep research since it is the basis for sleep evaluation and disease diagnosis. Related works have acquired many desirable outcomes. However, most of current studies focus on time-domain or frequency-domain measures as...

(This article belongs to the Special Issue Intelligent Biosignal Analysis Methods)
  • Article
  • Open Access
11 Citations
3,589 Views
19 Pages

7 November 2024

Mixed Reality (MR) technology possesses profound and extensive potential across a multitude of domains, including, but not limited to industry, healthcare, and education. However, prolonged use of MR devices to watch stereoscopic content may lead to...

(This article belongs to the Special Issue Brain Network Connectivity Analysis in Neuroscience)
  • Article
  • Open Access
45 Citations
5,586 Views
9 Pages

Quantitative High Density EEG Brain Connectivity Evaluation in Parkinson’s Disease: The Phase Locking Value (PLV)

  • Lazzaro di Biase,
  • Lorenzo Ricci,
  • Maria Letizia Caminiti,
  • Pasquale Maria Pecoraro,
  • Simona Paola Carbone and
  • Vincenzo Di Lazzaro

11 February 2023

Introduction: The present study explores brain connectivity in Parkinson’s disease (PD) and in age matched healthy controls (HC), using quantitative EEG analysis, at rest and during a motor tasks. We also evaluated the diagnostic performance of...

(This article belongs to the Special Issue Clinical Management of Movement Disorders)
  • Article
  • Open Access
17 Citations
4,019 Views
13 Pages

Altered Functional Connectivity and Complexity in Major Depressive Disorder after Musical Stimulation

  • Pintao Qiu,
  • Jinxiao Dai,
  • Ting Wang,
  • Hangcheng Li,
  • Cunbin Ma and
  • Xugang Xi

7 December 2022

Major depressive disorder (MDD) is a common mental illness. This study used electroencephalography (EEG) to explore the effects of music therapy on brain networks in MDD patients and to elucidate changes in functional brain connectivity in subjects b...

(This article belongs to the Special Issue Advanced Functional Connectivity Analysis in Neuropsychiatric Disorders)
  • Article
  • Open Access
30 Citations
6,870 Views
18 Pages

1 September 2019

Human inhibitory control refers to the suppression of behavioral response in real environments, such as when driving a car or riding a motorcycle, playing a game and operating a machine. The P300 wave is a neural marker of human inhibitory control, a...

(This article belongs to the Special Issue Novel Approaches to EEG Signal Processing)
  • Article
  • Open Access
136 Citations
14,179 Views
19 Pages

Complex Pearson Correlation Coefficient for EEG Connectivity Analysis

  • Zoran Šverko,
  • Miroslav Vrankić,
  • Saša Vlahinić and
  • Peter Rogelj

14 February 2022

In the background of all human thinking—acting and reacting are sets of connections between different neurons or groups of neurons. We studied and evaluated these connections using electroencephalography (EEG) brain signals. In this paper, we p...

(This article belongs to the Special Issue EEG Signal Processing for Biomedical Applications)
  • Article
  • Open Access
1,895 Views
24 Pages

Can Soundscapes Carry 40 Hz for Gamma Entrainment?: Evidence from a Pilot EEG Study

  • Kiechan Namkung,
  • Kanghyun Lee,
  • Kiseong Kim,
  • Dongjune Yeo,
  • Hyeeun Kim,
  • Seohyun Yoo,
  • Yebeen Lee,
  • Jisen Yuan,
  • Junghun Shin and
  • Mintaek Lim
  • + 1 author

19 February 2026

This pilot EEG study examined the feasibility of a soundscape-based 40 Hz auditory stimulation format by using a soundscape-only condition as a contrast control. We tested whether a nature-based soundscape with an additively layered pure 40 Hz sine c...

(This article belongs to the Section Applied Biosciences and Bioengineering)
  • Article
  • Open Access
27 Citations
5,720 Views
19 Pages

19 August 2022

While naturalistic stimuli, such as movies, better represent the complexity of the real world and are perhaps crucial to understanding the dynamics of emotion processing, there is limited research on emotions with naturalistic stimuli. There is a nee...

(This article belongs to the Section Cognitive, Social and Affective Neuroscience)
  • Article
  • Open Access
11 Citations
3,835 Views
16 Pages

A Novel Technique to Detect False Data Injection Attacks on Phasor Measurement Units

  • Saleh Almasabi,
  • Turki Alsuwian,
  • Ehtasham Javed,
  • Muhammad Irfan,
  • Mohammed Jalalah,
  • Belqasem Aljafari and
  • Farid A. Harraz

28 August 2021

The power industry is in the process of grid modernization with the introduction of phasor measurement units (PMUs), advanced metering infrastructure (AMI), and other technologies. Although these technologies enable more reliable and efficient operat...

(This article belongs to the Section Sensor Networks)
  • Article
  • Open Access
2 Citations
2,101 Views
23 Pages

Background: Multiple-object tracking (MOT) is a cognitively demanding task involving sustained attention and interhemispheric integration. While previous studies have revealed that gamma-band coherence mediates interhemispheric integration in MOT tas...

(This article belongs to the Section Neurotechnology and Neuroimaging)
  • Article
  • Open Access
60 Citations
10,350 Views
19 Pages

Subject-Specific Cognitive Workload Classification Using EEG-Based Functional Connectivity and Deep Learning

  • Anmol Gupta,
  • Gourav Siddhad,
  • Vishal Pandey,
  • Partha Pratim Roy and
  • Byung-Gyu Kim

9 October 2021

Cognitive workload is a crucial factor in tasks involving dynamic decision-making and other real-time and high-risk situations. Neuroimaging techniques have long been used for estimating cognitive workload. Given the portability, cost-effectiveness a...

(This article belongs to the Special Issue Emotion Intelligence Based on Smart Sensing)
  • Article
  • Open Access
17 Citations
4,225 Views
15 Pages

Functional Connectivity Increases in Response to High-Definition Transcranial Direct Current Stimulation in Patients with Chronic Disorder of Consciousness

  • Jinying Han,
  • Chen Chen,
  • Shuang Zheng,
  • Ting Zhou,
  • Shunyin Hu,
  • Xiaoxiang Yan,
  • Changqing Wang,
  • Kai Wang and
  • Yajuan Hu

18 August 2022

High-definition transcranial direct current stimulation (HD-tDCS) has been shown to play an important role in improving consciousness in patients with disorders of consciousness (DOCs), but its neuroelectrophysiological evidence is still lacking. To...

(This article belongs to the Section Sensory and Motor Neuroscience)
  • Article
  • Open Access
3 Citations
2,120 Views
22 Pages

25 February 2026

Objective: The purpose of this research is to examine how motivational music immediately impacts the brain’s functional connectivity patterns in male athletes following a single session of intense endurance exercise, utilizing resting-state ele...

(This article belongs to the Special Issue Advances in the Relationship Among Brain, Physical Function, and Exercise Performance)
  • Article
  • Open Access
6 Citations
2,939 Views
13 Pages

28 November 2022

In order to improve the ability of the phase-locked loop (PLL) microsystem applied in the aerospace environment to suppress the irradiation effect, this study presents an efficient charge pump hardened scheme by using the radiation-hardened-by-design...

(This article belongs to the Special Issue MEMS for Aerospace Applications, 2nd Edition)
  • Article
  • Open Access
7 Citations
3,687 Views
16 Pages

8 September 2022

This observational study mainly examines the impact of rainfall on Indian soil moisture (SM) variability in four homogeneous rainfall zones (i.e., central India (CI), northwest India (NWI), south peninsula India (SPIN), and northeast India (NEI)) as...

(This article belongs to the Section Soil and Water)
  • Article
  • Open Access
7 Citations
4,092 Views
13 Pages

This article presents a non-AC-side voltage sensor control method applied to More Electric Aircraft rectifiers. The control strategy can operate properly over a wide range of frequencies. This strategy calculates the AC supply frequency through an in...

(This article belongs to the Special Issue Power Converters and Electric Motor Drives)
  • Article
  • Open Access
6 Citations
2,096 Views
11 Pages

A Novel Demodulation Algorithm for Micro-Displacement Measurement Based on FMCW Sinusoidal Modulation

  • Zhen Xu,
  • Yongjie Wang,
  • Zhenqiang Li,
  • Gaochao Li,
  • Ke Li,
  • Hongtao Zhang and
  • Fang Li

20 December 2024

Frequency-modulated continuous wave (FMCW) interferometry, an emerging laser interferometry technology, can be applied in the field of fibre-optic sensing to achieve high-precision micro-displacement measurements. To address nonlinearity issues in la...

(This article belongs to the Special Issue Editorial Board Members’ Collection Series: Photonics Sensors)
  • Article
  • Open Access
18 Citations
3,665 Views
18 Pages

Grid Synchronization Enhancement of Distributed Generators Using an Adaptive Phase-Locked Loop Tuning System

  • Ahmed M. Elkholy,
  • Ibrahim B. M. Taha,
  • Salah Kamel and
  • Mohamed K. El-Nemr

24 February 2022

This paper proposes an effective algorithm; this algorithm is updating the phase-locked loop (PLL) gains according to the value of the short circuit ratio that will decrease the weak grid effect in the PLL controllers to reduce problems related to re...

(This article belongs to the Special Issue Environment and Electrical Engineering-Edition 2021)
  • Article
  • Open Access
18 Citations
4,502 Views
19 Pages

Selection of the Minimum Number of EEG Sensors to Guarantee Biometric Identification of Individuals

  • Jordan Ortega-Rodríguez,
  • José Francisco Gómez-González and
  • Ernesto Pereda

24 April 2023

Biometric identification uses person recognition techniques based on the extraction of some of their physical or biological properties, which make it possible to characterize and differentiate one person from another and provide irreplaceable and cri...

(This article belongs to the Special Issue Sensor Technologies for Human Health Monitoring)
  • Article
  • Open Access
25 Citations
5,722 Views
20 Pages

Detecting Phase-Synchrony Connectivity Anomalies in EEG Signals. Application to Dyslexia Diagnosis

  • Marco A. Formoso,
  • Andrés Ortiz,
  • Francisco J. Martinez-Murcia,
  • Nicolás Gallego and
  • Juan L. Luque

25 October 2021

Objective Dyslexia diagnosis is a challenging task, since traditional diagnosis methods are not based on biological markers but on behavioural tests. Although dyslexia diagnosis has been addressed by these tests in clinical practice, it is difficult...

(This article belongs to the Special Issue Smart Computing Systems for Biomedical Signal Processing)
  • Article
  • Open Access
1 Citations
2,320 Views
12 Pages

13 October 2022

Previous studies have reported that a series of sensory–motor-related cortical areas are affected when a healthy human is presented with images of tools. This phenomenon has been explained as familiar tools launching a memory-retrieval process...

(This article belongs to the Special Issue EEG Signal Processing Techniques and Applications)
  • Article
  • Open Access
2 Citations
1,460 Views
24 Pages

26 April 2025

Harmonic distortion caused by phase jumps in the phase-locked loop (PLL) during asymmetric faults poses a significant threat to the secure operation of renewable energy grid-connected systems. A harmonic suppression strategy based on Vague set theory...

  • Article
  • Open Access
8 Citations
4,667 Views
24 Pages

23 September 2021

In this paper, an adaptive version of the impedance-conditioned phase-locked loop (IC-PLL), namely the adaptive IC-PLL (AIC-PLL), is proposed. The IC-PLL has recently been proposed to address the issue of synchronisation with a weak AC grid by supple...

(This article belongs to the Section A3: Wind, Wave and Tidal Energy)
  • Article
  • Open Access
25 Citations
4,474 Views
14 Pages

The Characteristics and Locking Process of Nonlinear MEMS Gyroscopes

  • Yan Su,
  • Pengfei Xu,
  • Guowei Han,
  • Chaowei Si,
  • Jin Ning and
  • Fuhua Yang

24 February 2020

With the miniaturization of micro-electro-mechanical system (MEMS) gyroscopes, it is necessary to study their nonlinearity. The phase-frequency characteristics, which affect the start-up time, are crucial for guaranteeing the gyroscopes’ applic...

(This article belongs to the Special Issue MEMS/NEMS Sensors: Fabrication and Application, Volume II)
  • Article
  • Open Access
7 Citations
7,321 Views
18 Pages

7 December 2022

Neural entrainment to musical rhythm is thought to underlie the perception and production of music. In aging populations, the strength of neural entrainment to rhythm has been found to be attenuated, particularly during attentive listening to auditor...

(This article belongs to the Special Issue Music-Based Therapies and Interventions in Clinical Settings across the Life Span—New Methodological, Clinical and Technological Avenues)
  • Article
  • Open Access
351 Views
21 Pages

2 September 2026

Conventional phase-locked loop (PLL) frequency synthesizers face an inherent trade-off between achieving fine frequency stepping and maintaining low phase noise, which restricts the development of high-performance frequency synthesizers in high-frequ...

  • Article
  • Open Access
1 Citations
2,506 Views
17 Pages

Optical Energy Increasing in a Synchronized Motif-Ring Array of Autonomous Erbium-Doped Fiber Lasers

  • José Octavio Esqueda de la Torre,
  • Juan Hugo García-López,
  • Rider Jaimes-Reátegui,
  • José Luis Echenausía-Monroy,
  • Eric Emiliano López-Muñoz,
  • Héctor Eduardo Gilardi-Velázquez and
  • Guillermo Huerta-Cuellar

This work investigates the enhancement of optical energy in the synchronized dynamics of three erbium-doped fiber lasers (EDFLs) that are diffusively coupled in a unidirectional ring configuration without the need for external pump modulation. Before...

(This article belongs to the Section High-Power Laser Physics)
  • Article
  • Open Access
8 Citations
2,395 Views
14 Pages

11 April 2024

This work deals with doubly fed induction generator (DFIG) modeling and stability when connected to weak AC grids. A detailed state-space model that includes the phase-locked loop (PLL) is developed. This work aims to determine the influence of the n...

(This article belongs to the Collection Featured Papers in Electrical Power and Energy System)
  • Article
  • Open Access
1,180 Views
17 Pages

Beyond Synchrony: Non-Phase Gamma as a Candidate Mechanism for Perceptual Anti-Binding

  • Rocio Caballero-Díaz,
  • Esteban Sarrias-Arrabal,
  • Ruben Martin-Clemente and
  • Manuel Vazquez-Marrufo

20 February 2026

The gamma band observed in human electroencephalography (EEG) has been extensively studied. However, recent research has begun distinguishing the potential roles assigned to phase and non-phase modulation within this band. The primary aim of this stu...

  • Article
  • Open Access
9 Citations
3,799 Views
15 Pages

Improved Fixed-Frequency SOGI Based Single-Phase PLL

  • Djordje Stojic,
  • Tomasz Tarczewski,
  • Lukasz J. Niewiara and
  • Lech M. Grzesiak

4 October 2022

In this paper, an improved single-phase second order generalized integrator (SOGI) fixed-frequency phase-locked loop (FFPLL) is presented. The proposed improvement comprises the modification of the PLL input signal estimated phase angle correction fa...

  • Feature Paper
  • Article
  • Open Access
2,557 Views
12 Pages

3 March 2023

This paper studies a perturbative approach for the double sine–Gordon equation. Following this path, we are able to obtain a system of differential equations that shows the amplitude and phase modulation of the approximate solution. In the case λ = 0...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
2 Citations
3,990 Views
14 Pages

Simulation and Design of a PIC-Based Heterodyne Optical Phase Locked Loop

  • Xiu Yang,
  • Chanchan Luo,
  • Ben Zhang,
  • Bocang Qiu and
  • Ruiying Zhang

In this paper, we report on our simulation and design of a photonic integrated circuits (PIC)-based heterodyne optical phase-locked loop (OPLL). Our simulation reveals that the OPLL operation can be in one of three states, i.e., absolutely stable, me...

  • Article
  • Open Access
4 Citations
5,275 Views
17 Pages

MEMS resonators have attracted attention for their wide applications in highly accurate clock references, sensors, wireless communications, frequency control, etc. Most of the output frequencies of MEMS resonators require post-processing or calibrati...

  • Article
  • Open Access
6 Citations
4,923 Views
16 Pages

Error Probability of a Coherent M-ary PSK FSO System Influenced by Phase Noise

  • Milica Petković,
  • Goran T. Đorđević,
  • Jarosław Makal,
  • Zvezdan Marjanović and
  • Gradimir V. Milovanović

27 December 2022

In this paper, we aim to develop an analytical framework for design and analysis of new generation mobile networks fronthaul/backhaul links based on the application of free-space optical (FSO) technology. Taking the receiver hardware imperfections in...

(This article belongs to the Special Issue Novel Mathematical Methods in Signal Processing and Its Applications)
  • Article
  • Open Access
325 Views
25 Pages

3 August 2026

Interconnecting grid-following (GFL) and grid-forming (GFM) converters help stabilize weak grids with a high penetration of power electronics, but dynamic interactions can induce high-frequency oscillations (HFOs). The HFO mechanism within interconne...

(This article belongs to the Section F1: Electrical Power System)
  • Article
  • Open Access
2 Citations
3,854 Views
18 Pages

31 August 2022

In order to realize sensorless control of permanent magnet synchronous motor (PMSM) with high performance in low speed region, a novel rotor position observer scheme based on finite control set model predictive control (FCS-MPC) is presented in this...

(This article belongs to the Topic Advanced Electrical Machines and Drives Technologies)
  • Article
  • Open Access
15 Citations
8,290 Views
13 Pages

29 October 2023

Compared to the conventional boost power factor correction (PFC) converter, a totem-pole bridgeless PFC has high efficiency because it does not have an input diode rectifier stage, but a current spike may occur when the polarity of the grid voltage c...

(This article belongs to the Section Power Electronics)
  • Article
  • Open Access
5 Citations
3,904 Views
20 Pages

19 December 2022

An adaptive digital phase-locked loop (DPLL) continually adjusts the noise bandwidth of the loop filter in global navigation satellite system (GNSS) receivers to track signals by measuring the signal-to-noise ratio and/or dynamic stress. Such DPLLs h...

(This article belongs to the Special Issue GNSS Signals and Precise Point Positioning)
  • Article
  • Open Access
3 Citations
6,120 Views
14 Pages

New Scheme for Seamless Operation for Stand-Alone Power Systems

  • Hyun-Jun Kim,
  • Yoon-Seok Lee,
  • Byung-Moon Han and
  • Young-Doo Yoon

15 June 2016

On remote islands photovoltaic (PV) panels with battery energy storage systems (BESSs) supply electric power to customers in parallel operation with engine generators (EGs) to reduce fuel consumption and environmental burden. A BESS operates in volta...

(This article belongs to the Collection Smart Grid)
  • Article
  • Open Access
2 Citations
1,637 Views
17 Pages

6 November 2024

An increase in renewable energy generation in the microgrid can cause voltage oscillation problems. To address this issue, an equivalent circuit of the microgrid was established, including a synchronous generator, grid-connected inverter, and constan...

(This article belongs to the Section F: Electrical Engineering)
  • Article
  • Open Access
10 Citations
4,855 Views
9 Pages

Effects of Sound-Pressure Change on the 40 Hz Auditory Steady-State Response and Change-Related Cerebral Response

  • Eishi Motomura,
  • Koji Inui,
  • Yasuhiro Kawano,
  • Makoto Nishihara and
  • Motohiro Okada

16 August 2019

The auditory steady-state response (ASSR) elicited by a periodic sound stimulus is a neural oscillation recorded by magnetoencephalography (MEG), which is phase-locked to the repeated sound stimuli. This ASSR phase alternates after an abrupt change i...

  • Article
  • Open Access
172 Views
25 Pages

1 October 2026

Accurate reconstruction of nonlinear time-dependent dynamics is a fundamental challenge for recurrent spiking neural networks and neuromorphic signal-processing systems. In this work, we compare two prediction-error architectures for nonlinear state...

  • Article
  • Open Access
4 Citations
3,693 Views
17 Pages

Research on an Active Hydrogen Maser Digital Circuit Control System Based on FPGA

  • Wangwang Hu,
  • Tao Shuai,
  • Yonghui Xie,
  • Pengfei Chen,
  • Yuxian Pei,
  • Yang Zhao and
  • Rui Wang

15 November 2023

A hydrogen maser is a high-precision time measurement instrument with high frequency stability and low frequency drift, which is widely used in satellite navigation, ground time keeping, frequency measurement, and other fields. An active hydrogen mas...

(This article belongs to the Section Navigation and Positioning)
  • Article
  • Open Access
4 Citations
2,929 Views
13 Pages

16 June 2022

To realize the real-time measurement of masses of nanoparticles, virus molecules, organic macromolecules, and gas molecules, and to analyze their physical and chemical properties, a ZnO nanowire (NW) resonator operating at room temperature with an ul...

(This article belongs to the Section B1: Biosensors)

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