A Flexible Spatio-Temporal Filter for Biomedical Multichannel Data Denoising

Nuanprasert, Somchai ;   Adachi, Yoshiaki ;   Suzuki, Takashi

Tags Multivariate signal processing

In this paper, we present the noise reduction method for a multichannel measurement system where the true underlying signal is spatially...

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A Novel Technique to Investigate the Effect of Ageing on Ventricular Repolarization Characteristics in Healthy and LQTS Subjects

Imam, Hasan ;   Karmakar, Chandan ;   Palaniswami, Marimuthu ;   Khandoker, Ahsan Habib

Tags Multivariate signal processingSignal processing in physiological systems

Ventricular repolarization(VR) characteristics is affected by ageing alongside several other factors like Heart rate(HR),respiration,...

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Algorithms for the Inference of Causality in Dynamic Processes: Application to Cardiovascular and Cerebrovascular Variability

Faes, Luca ;   Porta, Alberto ;   Nollo, Giandomenico

Tags CausalityMultivariate signal processingDirectionality

This study faces the problem of causal inference in multivariate dynamic processes, with specific regard to the detection of instantaneous...

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An ECG Oximetry System for Identifying Obstructive and Central Apnoea Events

de Chazal, Philip ;   Sadr, Nadi ;   Jayawardhana, Madhuka

Tags Biomedical signal classificationMultivariate signal processingSignal processing in physiological systems

An automatic algorithm for processing simultaneously acquired electrocardiogram (ECG) and oximetry signals that identifies epochs of pure...

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An Enhanced Cerebral Recovery Index for Coma Prognostication Following Cardiac Arrest

Ghassemi, Mohammad ;   Amorim, Edilberto ;   Pati, Sandipan ;   Mark, Roger ;   Brown, Emery N ;   Purdon, Patrick ;   Westover, Brandon

Tags Biomedical signal classificationData mining in biosignalsMultivariate signal processing

Prognostication of coma outcomes following cardiac arrest is both qualitative and poorly understood in current practice. Existing quantitative...

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An Evaluation of EEG Ocular Artifact Removal with a Multi-Channel Wiener Filter based on Probabilistic Generative Model

Maki, Hayato ;   Toda, Tomoki ;   Sakriani, Sakti ;   Graham, Neubig ;   Satoshi, Nakamura

Tags Multivariate signal processingNonlinear filteringBlind source separation

Data contamination by ocular artifacts such as eye blinks and eye movements is a major barrier that must be overcome when attempting to...

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Assessing Assumptions of Multivariate Linear Regression Framework Implemented for Directionality Analysis of FMRI

Dang, Shilpa ;   Chaudhury, Santanu ;   Lall, Brejesh ;   Roy, Prasun Kumar

Tags CausalityDirectionalityMultivariate signal processing

Directionality analysis of time-series, recorded from task-activated regions-of-interest (ROIs) during functional Magnetic Resonance Imaging...

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Assessing Cerebral Blood Flow Control from Variability in Blood Pressure and Arterial CO2 Levels

Nikolic, Dragana ;   Birch, Anthony Alan ;   Panerai, Ronney ;   Simpson, David Martin

Tags Multivariate signal processingParametric filtering and estimationSignal processing in physiological systems

Blood flow to the brain is controlled by a number of physiological mechanisms that respond to changes in arterial blood pressure, arterial CO2...

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Assessment of Cardiorespiratory Interactions in West Syndrome using Phase Rectified Signal Averaging

Varon, Carolina ;   Jansen, Katrien ;   Lagae, Lieven ;   Van Huffel, Sabine

Tags Nonstationary processing of biomedical signalsMultivariate signal processingBiomedical signal classification

West syndrome is an age-dependent epilepsy that deeply affects the cardiorespiratory controls of the autonomic nervous system. This work...

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Automated Analysis of Nocturnal Oximetry as Screening Tool for Childhood Obstructive Sleep Apnea-Hypopnea Syndrome

Álvarez, Daniel ;   Kheirandish-Gozal, Leila ;   Gutierrez, Gonzalo Cesar ;   Crespo, Andrea ;   Philby, Mona F. ;   Mohammadi, Meelad ;   del Campo, Félix ;   Gozal, David ;   Hornero, Roberto

Tags Multivariate signal processingSignal processing in physiological systemsBiomedical signal classification

Childhood obstructive sleep apnea-hypopnea syndrome (OSAHS) is a highly prevalent condition that negatively affects health, performance and...

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Automated Sleep Spindle Detection using IIR Filters and a Gaussian Mixture Model

Patti, Chanakya Reddy ;   Penzel, Thomas ;   Cvetkovic, Dean

Tags Biomedical signal classificationData mining in biosignalsMultivariate signal processing

Sleep spindle detection using modern signal processing techniques such as the Short-Time Fourier Transform and Wavelet Analysis are common...

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Binary Autonomic State Classification based on Basic Heart Rate Variability Indices

Ito, Toshiki ;   Yamashita, Shohei ;   Yana, Kazuo

Tags Biomedical signal classificationSignal processing in physiological systemsMultivariate signal processing

This paper examined the basic state classification accuracy utilizing standard heart rate variability (HRV) indices. HF, LF/HF, HRV mean and...

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Blood Pressure and Pulse Interval Coupling: A Copula Approach

Bajic, Dragana ;   Loncar-Turukalo, Tatjana ;   Skoric, Tamara ;   Japundzic-Zigon, Nina

Tags Multivariate signal processingNonlinear coupling of biomedical signalsSignal processing in physiological systems

In this paper a copula approach is applied as a tool for assessing the measure of statistical dependence of parallel cardiovascular time...

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Breathing Rate Estimation during Sleep using Audio Signal Analysis

Dafna, Eliran ;   Rosenwein, Tal ;   Tarasiuk, Ariel ;   Zigel, Yaniv

Tags Signal processing in physiological systemsMultivariate signal processingTime-frequency analysis of biosignals

Sleep is associated with important changes in respiratory rate and ventilation. Currently, breathing rate (BR) is measured during sleep using...

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CAP Waveform Estimation from the Measured Electrical Bioimpedance Values: Patient's Heart Rate Variability Analysis

Krivoshei, Andrei ;   Uuetoa, Hasso ;   Min, Mart ;   Annus, Paul ;   Uuetoa, Tiina ;   Lamp, Jürgen

Tags Multivariate signal processingPrincipal component analysisData mining in biosignals

The paper presents analysis of the generic transfer function (TF) between Electrical Bioimpedance (EBI) measured non-invasively on the wrist...

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Cardiorespiratory Capacity of Heart Rate

Fedotov, Alexander ;   Akulova, Anna ;   Akulov, Sergey

Tags Nonstationary processing of biomedical signalsMultivariate signal processingNonlinear coupling of biomedical signals

This paper considers the novel algorithm for assessment of cardiorespiratory capacity based on the modified phase-rectified signal averaging...

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Cardiovascular Control in Spontaneous Hypertensive and Normotensive Sinoaortic Denervated Rats during Hemorrhagic Shock

Aletti, Federico ;   Dos Santos, Fernando ;   Dias Moreira, Edson ;   Irigoyen, Maria Claudia ;   Ferrario, Manuela

Tags Closed loop systems in physiological systemsMultivariate signal processingSignal processing in physiological systems

Hemorrhagic shock is characterized by blood loss, rapid decrease in blood pressure, and sympathetic activation aimed at increasing heart rate...

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Computerised Objective Measurement of Strain in Voiced Speech

Jalalinajafabadi, Farideh ;   Gadepalli, Chaitanya ;   Ghasempour, Mohsen ;   Lujan, Mikel ;   Cheetham, Barry ;   Homer, Jarrod

Tags Signals and systemsBiomedical signal classificationMultivariate signal processing

Voice quality assessment is required by healthcare professionals in patients suffering from voice problems. Speech and language therapists...

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Detection of Mild Alzheimer's Disease and Mild Cognitive Impairment from Elderly Speech: Binary Discrimination using Logistic Regression

Kato, Shohei ;   Homma, Akira ;   Sakuma, Takuto ;   Nakamura, Munehiro

Tags Biomedical signal classificationData mining in biosignalsMultivariate signal processing

In this research, we have developed a novel data mining approach for detection of cognitive impairment, SPCIR (Speech Prosody-Based Cognitive...

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Detection of Stress/anxiety State from EEG Features during Video Watching

Giannakakis, Giorgos ;   Grigoriadis, Dimitris ;   Tsiknakis, Manolis

Tags Signal processing in physiological systemsMultivariate signal processingPattern recognition methods for data mining in biosignals

This paper studies the effect of stress/anxiety states on EEG signals during video sessions. The levels of arousal and valence that are...

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Detection of the Recovery Phase of in Vivo Gastric Slow Wave Recordings

Paskaranandavadivel, Niranchan ;   Pan, Xingzheng ;   Du, Peng ;   O'Grady, Gregory ;   Cheng, Leo K

Tags Signal processing in physiological systemsSignals and systemsMultivariate signal processing

Gastric motility is coordinated by bio-electrical events known as slow waves. Abnormalities in slow waves are linked to major functional and...

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Effect of Music on Standing Stability

Perdomo, Oscar Julian ;   Argothy, Rodrigo Esteban ;   Wilches, Carlos Andres ;   Perdomo, Cesar

Tags Multivariate signal processingSignal processing in physiological systemsBiomedical simulation involving signal processing

The instability of balance control is commonly observed in subjects by biomechanical alterations affecting musculoskeletal, visual, vestibular...

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Efficient Estimation of Tissue Thicknesses using Sparse Approximation for Gaussian Processes

Wissel, Tobias ;   Stueber, Patrick ;   Wagner, Benjamin ;   Schweikard, Achim ;   Ernst, Floris

Tags Pattern recognition methods for data mining in biosignalsMultivariate signal processingSignal processing in physiological systems

Highly accurate localization of the human skull is vital in cranial radiotherapy. Marker-less optical head tracking provides a fast and accurate...

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Eliminating Pulse-Induced Artifacts in Urethral Pressure Data

Klünder, Mario ;   Feuer, Ronny ;   Amend, Bastian ;   Kelp, Alexandra ;   Stenzl, Arnulf ;   Sievert, Karl-Dietrich ;   Sawodny, Oliver ;   Ederer, Michael

Tags Multivariate signal processingPrincipal component analysis

Urethral Pressure Profilometry (UPP) is a tool in the diagnosis of urinary incontinence. The pressure profile along the urethra is measured...

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Evaluation of Resting-State Magnetoencephalogram Complexity in Alzheimer's Disease with Multivariate Multiscale Permutation and Sample Entropies

Azami, Hamed ;   Smith, Keith ;   Fernandez, Alberto ;   Escudero, Javier

Tags Nonlinear analysis of biomedical signalsMultivariate signal processing

Alzheimer’s disease (AD) is one of the fastest growing neurological diseases in the world. We evaluate multivariate multiscale sample entropy...

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Extending the Automated Gastrointestinal Analysis Pipeline: Removal of Invalid Slow Wave Marks in Gastric Serosal Recordings

Paskaranandavadivel, Niranchan ;   Du, Peng ;   Erickson, Jon ;   O'Grady, Gregory ;   Cheng, Leo K

Tags Multivariate signal processingSignal processing in physiological systemsSignals and systems

Gastric contractions are governed by a bio-electrical event known as slow waves. High-resolution electrical mapping has recently been applied...

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Feature Extraction for BCIs based on Electromagnetic Source Localization and Multiclass Filter Bank Common Spatial Patterns

Zaitcev, Aleksandr ;   Cook, Greg ;   Liu, Wei ;   Paley, Martyn ;   Milne, Elizabeth

Tags Biomedical signal classificationPattern recognition methods for data mining in biosignalsMultivariate signal processing

Brain-Computer Interfaces (BCIs) provide means for communication and control without muscular movement and, therefore, can offer significant...

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General Anesthesia Reduces the Information Exchange between Heart and Circulation

Porta, Alberto ;   Bari, Vlasta ;   Marchi, Andrea ;   De Maria, Beatrice ;   Pistuddi, Valeria ;   Ranucci, Marco

Tags Multivariate signal processingCausalityClosed loop systems in physiological systems

The study demonstrates the ability of an information-theoretic measure, such as the transfer entropy (TE), in detecting the depression of...

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Globally Conditioned Causality in Estimating Directed Brain-Heart Interactions through Joint MRI and RR Series Analysis

Duggento, Andrea ;   Bianciardi, Marta ;   Wald, Lawrence L. ;   Passamonti, Luca ;   Guerrisi, Maria ;   Barbieri, Riccardo ;   Toschi, Nicola

Tags CausalityMultivariate signal processingSignal processing in physiological systems

We used 7T fMRI with simultaneous physiological signals acquisitions to investigate the causal interactions from resting state brain activity to...

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Hessian Regularization based Non-Negative Matrix Factorization for Gene Expression Data Clustering

Liu, Xiao ;   Shi, Jun ;   Wang, Congzhi

Tags Data mining in biosignalsPattern recognition methods for data mining in biosignalsMultivariate signal processing

Since a key step in the analysis of gene expression data is to detect groups of genes that have similar expression patterns, clustering...

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Hidden Markov Model-Based Strategy for Gait Segmentation using Inertial Sensors: Application to Elderly, Hemiparetic Patients and Huntington's Disease Patients

Mannini, Andrea ;   Trojaniello, Diana ;   Della Croce, Ugo ;   Sabatini, Angelo Maria

Tags Markov models in signal pattern classificationSignal processing in physiological systemsMultivariate signal processing

A solution to discriminate stance and swing in both healthy and abnormal gait using inertial sensors is proposed. The method is based on a two...

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Identification of Whole-Brain Network Modules based on a Large Scale Granger Causality Approach

Pester, Britta ;   Schmidt, Christoph ;   Schmid-Hertel, Nicole ;   Witte, Herbert ;   Wismueller, Axel ;   Leistritz, Lutz

Tags Connectivity measurementsMultivariate signal processingPrincipal component analysis

Spatially high resolved neurophysiological data commonly pose a computational and analytical problem for the identification of functional...

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Improving the Prediction Performance of PLSR using RReliefF and FSD for the Quantitative Analysis of Glucose in Near Infrared Spectra

Patchava, Krishna Chaitanya ;   Benaissa, Mohammed ;   Behairy, Hatim

Tags Multivariate signal processingSignal processing in physiological systemsBiomedical simulation involving signal processing

This paper proposes a novel pre-processing method, Fourier Self Deconvoluted RReliefF (FSDR) that is based on combining Fourier Self...

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Instantaneous Transfer Entropy for the Study of Cardio-Respiratory Dynamics

Valenza, Gaetano ;   Faes, Luca ;   Citi, Luca ;   Orini, Michele ;   Barbieri, Riccardo

Tags Nonlinear dynamics in biomedical signalsMultivariate signal processingNonlinear coupling of biomedical signals

Measures of transfer entropy have been proposed to quantify the directional coupling and strength between two complex physiological...

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Interictal Networks in Temporal Lobe Epilepsy Revealed by Joint ICA

Hunyadi, Borbala ;   Van Huffel, Sabine

Tags Independent component analysisMultivariate signal processingBlind source separation

We study the spatiotemporal characteristics of the epileptic network during interictal activity. Joint ICA of EEG and fMRI data reveals...

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Joint Source Separation of Simultaneous EEG-FMRI Recording in Two Experimental Conditions using Common Spatial Patterns

Tan, Ao ;   Fu, Zening ;   Tu, Yiheng ;   Hung, Y.S. ;   Zhang, Zhiguo

Tags Data mining in biosignalsBlind source separationMultivariate signal processing

Simultaneous collection of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) data has become increasingly popular...

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Localization of Brain Activities using Multiway Analysis of EEG Tensor via EMD and Reassigned TF Representation

Pouryazdian, Saeed ;   Beheshti, Soosan ;   Krishnan, Sridhar

Tags Multivariate signal processingEmpirical mode decomposition in biosignal analysisData mining in biosignals

Electroencephalogram (EEG) is widely used for monitoring, diagnosis purposes and also for study of brain’s physiological, mental and functional...

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Measuring Cervical Vertebra Movements using Kinect Sensor

Ma, Xiaolong ;   Xu, Guanghua ;   Li, Min ;   Xie, Jun ;   Chen, longting ;   Pei, Wei

Tags Multivariate signal processingBiomedical simulation involving signal processing

The incidence of cervical vertebra spondylosis is increasing with the pace of life while there is no high-efficient measurement method. This...

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Mortality Prediction in Septic Shock Patients: Towards New Personalized Models in Critical Care

Carrara, Marta ;   Baselli, Giuseppe ;   Ferrario, Manuela

Tags Multivariate signal processingSignal processing in physiological systemsData mining in biosignals

We studied the problem of mortality prediction in 23 septic shock patients selected from the public database MIMIC-II. For each patient we...

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Multimodal Approach to Estimate the Ocular Movements during EEG Recordings: A Coupled Tensor Factorization Method

Rivet, Bertrand ;   Duda, Marc ;   Guerin-Dugue, Anne ;   Jutten, Christian ;   Comon, Pierre

Tags Multivariate signal processingBlind source separation

This paper deals with coupled tensor factorization. A relaxed criterion derived from the advanced coupled matrix-tensor factorization (ACMTF)...

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Muscle Fatigue Detection during Dynamic Contraction under Blood Flow Restriction: Improvement of Detection Sensitivity using Multivariable Fatigue Indices

Ito, Kenichi ;   Korakata, Yuki ;   Hotta, Yu

Tags Signal processing in physiological systemsMultivariate signal processing

At present, in order to detect peripheral muscle fatigue, it is customary to perform a frequency domain analysis using surface...

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Noise Suppression of Microelectrode Recording of Multichannel EMG Writers Cramp Signals and Principal Component Analysis

Rama Raju, Venkateshwarla

Tags Principal component analysisEmpirical mode decomposition in biosignal analysisMultivariate signal processing

INTRODUCTION Electromyography (EMG) is a complex signal arising from muscle contraction. Its characteristics are affected ny many factors...

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On Sweat Analysis for Quantitative Estimation of Dehydration during Physical Exercise

Ring, Matthias ;   Lohmüller, Clemens ;   Manfred, Rauh ;   Eskofier, Bjoern M

Tags Pattern recognition methods for data mining in biosignalsSignal processing in physiological systemsMultivariate signal processing

Quantitative estimation of water loss during physical exercise is of importance because dehydration can impair both muscular strength and...

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On the Influence of High-Pass Filtering on ICA-Based Artifact Reduction in EEG-ERP

Winkler, Irene ;   Debener, Stefan ;   Müller, Klaus-Robert ;   Tangermann, Michael

Tags Independent component analysisBlind source separationMultivariate signal processing

Standard artifact removal methods for electroencephalographic (EEG) signals are either based on Independent Component Analysis (ICA) or...

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Partial Directed Coherence Statistical Performance Characteristics in Frequency Domain

Sameshima, Koichi ;   Takahashi, Daniel Yasumasa ;   Baccala, Luiz Antonio

Tags Connectivity measurementsCausalityMultivariate signal processing

In this work we show the asymptotic behavior of information partial directed coherence estimator via the Monte Carlo simulation of a...

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Phenotypic Characterisation of Crohn's Disease Severity

Clifton, David ;   Niehaus, Katherine ;   Uhlig, Holm

Tags Data mining in biosignalsMultivariate signal processingSignal processing in physiological systems

Crohn’s disease (CD) is a highly heterogeneous disease, with great variation in patient severity. Using supervised machine learning techniques...

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Quantifying Spatiotemporal Complexity of Cardiac Dynamics using Ordinal Patterns

Schlemmer, Alexander ;   Berg, Sebastian ;   Shajahan, T K ;   Luther, Stefan ;   Parlitz, Ulrich

Tags Nonlinear analysis of biomedical signalsMultivariate signal processing

Analyzing the dynamics of complex excitation wave patterns in cardiac tissue plays a key role for understanding the origin of life-threatening...

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Reconstruction of Signal in Plastic Scintillator of PET using Tikhonov Regularization

Raczynski, Lech

Tags Multivariate signal processingPrincipal component analysisAdaptive filtering

The new concept of Time of Flight Positron Emission Tomography (TOF-PET) detection system, which allows for single bed imaging of the whole...

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Redundant and Synergistic Information Transfer in Cardiovascular and Cardiorespiratory Variability

Faes, Luca ;   Porta, Alberto ;   Nollo, Giandomenico

Tags CausalityMultivariate signal processingConnectivity measurements

In the framework of information dynamics, new tools are emerging which allow one to quantify how the information provided by two source...

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Separation of Ambulatory Skin Conductance in Day and Sleep Activities based on Activity Magnitude and Sleep-Wake Scoring

Sano, Akane ;   Fedor, Szymon ;   Picard, Rosalind

Tags Data mining in biosignalsMultivariate signal processing

Ambulatory skin conductance (SC) signals often need to be analyzed independently for different user activities. As an ambulatory SC sensor...

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Single-Trial Classification of Multi-User P300-Based Brain-Computer Interface using Riemannian Geometry

Korczowski, Louis ;   Jutten, Christian ;   Congedo, Marco

Tags Biomedical signal classificationCoherence in biomedical signal processingMultivariate signal processing

The classification of electroencephalographic (EEG) data recorded from multiple users simultaneously is an important challenge in the field of...

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Sleep Apnoea Episodes Recognition by a Committee of Elm Classifiers from ECG Signal

Sadr, Nadi ;   de Chazal, Philip ;   van Schaik, André ;   Breen, Paul

Tags Biomedical signal classificationMultivariate signal processingNeural networks in biosignal processing and classification

This paper represents a system for recognition of sleep apnoea episodes from ECG signal by using a committee of extreme learning machine...

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Standardized Push up during a Physical Examination by Distance, Forces and EMG Analysis

Perdomo, Oscar Julian ;   Barbon, Cristian ;   Hakspiel, Sebastian ;   Hurtado, Carlo ;   Wilches, Carlos Andres

Tags Time-frequency analysis of biosignalsMultivariate signal processingSignals and systems

This article presents the design of a new system for standardization and evaluation of parameter in push-ups for using at the Colombian...

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Supervised Nonlinear Dimension Reduction of Functional Magnetic Resonance Imaging Data using Sliced Inverse Regression

Tu, Yiheng ;   Tan, Ao ;   Fu, Zening ;   Hung, Y.S. ;   Hu, Li ;   Zhang, Zhiguo

Tags Nonlinear analysis of biomedical signalsMultivariate signal processingBiomedical signal classification

Dimension reduction is essential for identifying a small set of discriminative features that are predictive of behavior or cognition from...

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Symbolic Dynamics of Pulse Transit Time and Heart Period in Children with Upper Airway Obstruction

Baumert, Mathias ;   Kohler, Mark ;   Pamula, Yvonne ;   Immanuel, Sarah Anita

Tags Multivariate signal processingSignal processing in physiological systemsNonlinear dynamics in biomedical signals

Upper airway obstruction (UAO) is a relatively common condition during childhood that is characterized by periods of partial or complete upper...

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Topological Changes of Functional Brain Networks in Healthy and Diseased Subjects

De Vico Fallani, Fabrizio

Tags Connectivity measurementsData mining in biosignalsMultivariate signal processing

We have known for at least 100 years that the brain is organized as a network of connections between neuronal ensembles. However, only in...

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Using Wearable Sensors for Semiology-Independent Seizure Detection – Towards Ambulatory Monitoring of Epilepsy

Heldberg, Beeke E ;   Kautz, Thomas ;   Leutheuser, Heike ;   Hopfengärtner, Rüdiger ;   Kasper, Burkhard ;   Eskofier, Bjoern M

Tags Biomedical signal classificationPattern recognition methods for data mining in biosignalsMultivariate signal processing

Epilepsy is a disease of the central nervous system. Nearly 70% of people with epilepsy respond to a proper treatment, but for a successful...

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Visualization of Multivariate Physiological Data for Cardiorespiratory Fitness Assessment through ECG (R-Peak) Analysis

Muñoz Cardona, John Edison ;   Bermúdez i Badia, Sergi ;   Cameirao, Monica ;   Gouveia, Elvio Rubio

Tags Signal processing in physiological systemsMultivariate signal processing

The recent rise and popularization of wearable and ubiquitous fitness sensors has increased our ability to generate large amounts of...

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Wiener-Granger Causality in QT-HP Variability Interactions

Porta, Alberto ;   Bari, Vlasta ;   Marchi, Andrea ;   De Maria, Beatrice ;   Cerutti, Sergio

Tags Multivariate signal processingSignal processing in physiological systemsCausality

The study exploits a Wiener-Granger causality (WGC) approach in the time domain to assess directionality of the dynamical interactions...

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