Snore site discrimination using statistical moments of free field snoring sounds recorded during sleep nasendoscopy.


:The non-invasive measurement of free field snoring sounds to estimate the site of snoring is an important development in the diagnosis, treatment and management of sleep-related breathing disorders. We investigated characteristics of the probability density function by testing the sensitivity of the statistical moments to amplitude patterns in the snoring acoustic signal. Snoring sounds from 15 patients were recorded whilst performing sleep (under anaesthetic) nasendoscopy evaluation. We demonstrated, using a fuzzy 2-means clustering method, that a combination of the statistical dimensionless moment coefficients of skewness and kurtosis could discriminate between pure palatal and non-palatal snoring subject groups.


Physiol Meas


Beeton RJ,Wells I,Ebden P,Whittet HB,Clarke J




Has Abstract


2007-10-01 00:00:00














  • A semi-implantable multichannel telemetry system for continuous electrical, mechanical and hemodynamical recordings in animal cardiac research.

    abstract::We have developed an eight-channel telemetry system for studying experimental models of chronic cardiovascular disease. The system is an extension of a previous device that has been miniaturized, reduced in power consumption and provided with increased functionality. We added sensors for ventricular dimension, and cor...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Kong W,Huang J,Rollins DL,Ideker RE,Smith WM

    更新日期:2007-03-01 00:00:00

  • Wavelet-based real-time calculation of multiple physiological parameters on an embedded platform.

    abstract:OBJECTIVE:This paper aims to present how physiological signals can be processed based on wavelet decomposition to calculate multiple physiological parameters in real-time on an embedded platform. APPROACH:An ECG and PPG are decomposed to the appropriate scale based on a quadratic spline wavelet base in order to obtain...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Tang M,Xia P,He Z,Zhao Z,Chen X,Yang T,Zhang Z,Zhan Q,Li X,Fang Z

    更新日期:2020-03-06 00:00:00

  • Non-invasive, side-selective nasal airflow monitoring.

    abstract::Nasal obstruction disturbs comfort during daytime, and sleep quality. Convenient objective assessment of nasal ventilation would be desirable. Therefore, we developed a technique for unobtrusive monitoring of bilateral nasal airflow. Nasal cannulae with separated left- and right-sided tubings were connected to two pre...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Kohler M,Thurnheer R,Bloch KE

    更新日期:2005-02-01 00:00:00

  • Energy scavenging sources for biomedical sensors.

    abstract::Energy scavenging has increasingly become an interesting option for powering electronic devices because of the almost infinite lifetime and the non-dependence on fuels for energy generation. Moreover, the rise of wireless technologies promises new applications in medical monitoring systems, but these still face limita...

    journal_title:Physiological measurement

    pub_type: 杂志文章,评审


    authors: Romero E,Warrington RO,Neuman MR

    更新日期:2009-09-01 00:00:00

  • Development of a noncontact heart rate monitoring system for sedentary behavior based on an accelerometer attached to a chair.

    abstract::Although people spend a third of their day engaged in sedentary activities, research on heart activity during sitting is almost nonexistent because of the discomfort experienced when electrocardiogram (ECG) measurement electrodes are attached to the body. Accordingly, in this study, a system was developed to monitor h...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Lim E,Lee HK,Myoung HS,Lee KJ

    更新日期:2015-03-01 00:00:00

  • Comparison of EPR oximetry and Eppendorf polarographic electrode assessments of rat brain PtO2.

    abstract::EPR oximetry is a promising, relatively non-invasive method for monitoring the partial pressure of oxygen in tissue (PtO2) that has proved useful in following changes under various physiologic and pathophysiologic conditions. Optimal utilization of the method will be facilitated by systematic comparisons with other av...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: O'Hara JA,Khan N,Hou H,Wilmo CM,Demidenko E,Dunn JF,Swartz HM

    更新日期:2004-12-01 00:00:00

  • Single-sector thermophysiological human simulator.

    abstract::Thermal sweating manikins are used to analyse the heat and mass transfer phenomena in the skin-clothing-environment system. However, the limiting factor of present thermal manikins is their inability to simulate adequately the human thermal behaviour, which has a significant effect on the clothing microenvironment. A ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Psikuta A,Richards M,Fiala D

    更新日期:2008-02-01 00:00:00

  • Dynamic time warping and machine learning for signal quality assessment of pulsatile signals.

    abstract::In this work, we describe a beat-by-beat method for assessing the clinical utility of pulsatile waveforms, primarily recorded from cardiovascular blood volume or pressure changes, concentrating on the photoplethysmogram (PPG). Physiological blood flow is nonstationary, with pulses changing in height, width and morphol...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Li Q,Clifford GD

    更新日期:2012-09-01 00:00:00

  • Sleep stage classification with ECG and respiratory effort.

    abstract::Automatic sleep stage classification with cardiorespiratory signals has attracted increasing attention. In contrast to the traditional manual scoring based on polysomnography, these signals can be measured using advanced unobtrusive techniques that are currently available, promising the application for personal and co...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Fonseca P,Long X,Radha M,Haakma R,Aarts RM,Rolink J

    更新日期:2015-10-01 00:00:00

  • Is dynamic cerebral autoregulation measurement using transcranial Doppler ultrasound reproducible in the presence of high concentration oxygen and carbon dioxide?

    abstract::Reliability of cerebral blood flow velocity (CBFV) and dynamic cerebral autoregulation estimates (expressed as autoregulation index: ARI) using spontaneous fluctuations in blood pressure (BP) has been demonstrated. However, reliability during co-administration of O2 and CO2 is unknown. Bilateral CBFV (using transcrani...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Minhas JS,Syed NF,Haunton VJ,Panerai RB,Robinson TG,Mistri AK

    更新日期:2016-05-01 00:00:00

  • Age-related changes in pulse risetime measured by multi-site photoplethysmography.

    abstract:OBJECTIVE:It is accepted that changes in the peripheral pulse waveform characteristics occur with ageing. Pulse risetime is one important feature which has clinical value. However, it is unclear how it varies across the full age spectrum from child to senior and for different peripheral measurement sites. The objective...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Allen J,O'Sullivan J,Stansby G,Murray A

    更新日期:2020-08-11 00:00:00

  • Validation of a new dielectric device to assess changes of tissue water in skin and subcutaneous fat.

    abstract::Easily applicable and inexpensive water-specific techniques to evaluate local oedema, swollen tissue problems and fluid retention in humans are not available. In the present investigation a recently constructed non-invasive device for a local measurement of changes in tissue water in human skin and subcutaneous fat (S...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Nuutinen J,Ikäheimo R,Lahtinen T

    更新日期:2004-04-01 00:00:00

  • Real time impedance plots with arbitrary frequency components.

    abstract::Temporal changes in the impedance spectra of bioelectrodes in contact with skin provide useful data for comparisons between differing electrode materials and skin preparation methods. Traditional impedance measuring systems employ swept frequency methods which will distort results in the impedance spectra of a sample ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Searle A,Kirkup L

    更新日期:1999-02-01 00:00:00

  • Comprehensive analysis of cardiac health using heart rate signals.

    abstract::The electrocardiogram is a representative signal containing information about the condition of the heart. The shape and size of the P-QRS-T wave, the time intervals between its various peaks, etc may contain useful information about the nature of disease affecting the heart. However, the human observer cannot directly...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Acharya U R,Kannathal N,Krishnan SM

    更新日期:2004-10-01 00:00:00

  • An intelligent ventilation and oxygenation management system in neonatal intensive care using fuzzy trend template fitting.

    abstract::This paper describes an open loop feedback intelligent system for neonatal intensive care management. The system provides a tool enabling the user to make the final decision to accept or reject the advice given. The system collects 18 parameters from the bedside monitor and ventilator using a Medical Information Bus (...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Belal SY,Taktak AF,Nevill A,Spencer A

    更新日期:2005-08-01 00:00:00

  • Recognition of elementary arm movements using orientation of a tri-axial accelerometer located near the wrist.

    abstract::In this paper we present a method for recognising three fundamental movements of the human arm (reach and retrieve, lift cup to mouth, rotation of the arm) by determining the orientation of a tri-axial accelerometer located near the wrist. Our objective is to detect the occurrence of such movements performed with the ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Biswas D,Corda D,Baldus G,Cranny A,Maharatna K,Achner J,Klemke J,Jöbges M,Ortmann S

    更新日期:2014-09-01 00:00:00

  • Monitoring of heart rate and inter-beat intervals with wrist plethysmography in patients with atrial fibrillation.

    abstract:OBJECTIVE:Atrial fibrillation (AF) causes marked risk for patients, while silent fibrillation may remain unnoticed if not suspected and screened. Development of comfortable yet accurate beat-to-beat heart rate (HR) monitoring with good AF detection sensitivity would facilitate screening and improve treatment. The purpo...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Harju J,Tarniceriu A,Parak J,Vehkaoja A,Yli-Hankala A,Korhonen I

    更新日期:2018-06-27 00:00:00

  • Localization of sources of brain alpha/theta/delta activity and the influence of the mode of spontaneous mentation.

    abstract::A method is described that accounts for multichannel brain field data (EEG) epochs, after transformation into the frequency domain, by a single oscillating dipole source in terms of phase angles. The method produces a potential distribution for each frequency point ('FFT dipole approximation'). These maps can be subje...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Michel CM,Henggeler B,Brandeis D,Lehmann D

    更新日期:1993-11-01 00:00:00

  • Contactless impedance measurement by magnetic induction--a possible method for investigation of brain impedance.

    abstract::Using a primary coil that induces eddy currents in a volume conductor, and a pair of secondary coils configured to form a differential transformer, it is possible to measure the conductivity of a volume conductor by the magnetic fields of the induced eddy currents. This method is especially favourable for measuring im...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Netz J,Forner E,Haagemann S

    更新日期:1993-11-01 00:00:00

  • Dynamics of tissue shrinkage during ablative temperature exposures.

    abstract::There is a lack of studies that examine the dynamics of heat-induced shrinkage of organ tissues. Clinical procedures such as radiofrequency ablation, microwave ablation or high-intensity focused ultrasound, use heat to treat diseases such as cancer and cardiac arrhythmia. When heat is applied to tissues, shrinkage occ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Rossmann C,Garrett-Mayer E,Rattay F,Haemmerich D

    更新日期:2014-01-01 00:00:00

  • Evaluation of an EIT reconstruction algorithm using finite difference human thorax models as phantoms.

    abstract::A finite difference model of the human thorax with 113,400 control volumes (nodes) based on ECG gated MRI images was used to evaluate the Sheffield DAS-01P EIT system. Sixteen simulated electrode positions equally spaced around the thorax model at approximately the fourth intercostals space level were selected. Pairs ...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Patterson RP,Zhang J

    更新日期:2003-05-01 00:00:00

  • An instrumented timed up and go: the added value of an accelerometer for identifying fall risk in idiopathic fallers.

    abstract::The Timed Up and Go (TUG) test is a widely used measure of mobility and fall risk among older adults that is typically scored using a stopwatch. We tested the hypothesis that a body-fixed accelerometer can enhance the ability of the TUG to identify community-living older adults with a relatively high fall risk of unkn...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Weiss A,Herman T,Plotnik M,Brozgol M,Giladi N,Hausdorff JM

    更新日期:2011-12-01 00:00:00

  • Classification of glucose concentration in diluted urine using the low-resolution Raman spectroscopy and kernel optimization methods.

    abstract::In order to detect minute amounts of glucose in diluted urine, we applied the Raman spectroscopy method. To simulate abnormal diluted urine in a toilet bowl, we diluted normal urine ten-fold with water and added glucose up to 8 mg dl(-1). Data were collected using a low-resolution Raman spectrometer that was preproces...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Park C,Kim K,Choi J,Park K

    更新日期:2007-05-01 00:00:00

  • Thermography and colour duplex ultrasound assessments of arterio-venous fistula function in renal patients.

    abstract::Vascular and clinical assessments of arterio-venous fistula (AVF) function and access are important in patients undergoing or preparing to undergo renal dialysis. Objective assessment techniques include colour duplex ultrasound and more recently medical infrared thermography. Ideally, these should help assess problems...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Allen J,Oates CP,Chishti AD,Ahmed IA,Talbot D,Murray A

    更新日期:2006-01-01 00:00:00

  • A practical approach to storage and retrieval of high-frequency physiological signals.

    abstract:OBJECTIVE:Storage of physiological waveform data for retrospective analysis presents significant challenges. Resultant data can be very large, and therefore becomes expensive to store and complicated to manage. Traditional database approaches are not appropriate for large scale storage of physiological waveforms. Our g...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Goodwin AJ,Eytan D,Greer RW,Mazwi M,Thommandram A,Goodfellow SD,Assadi A,Jegatheeswaran A,Laussen PC

    更新日期:2020-04-20 00:00:00

  • Measuring gait with an accelerometer-based wearable: influence of device location, testing protocol and age.

    abstract::Wearables such as accelerometers are emerging as powerful tools for quantifying gait in various environments. Flexibility in wearable location may improve ease of use and data acquisition during instrumented testing. However, change of location may impact algorithm functionality when evaluating associated gait charact...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Del Din S,Hickey A,Hurwitz N,Mathers JC,Rochester L,Godfrey A

    更新日期:2016-10-01 00:00:00

  • Assessment of cerebrospinal fluid outflow conductance using constant-pressure infusion--a method with real time estimation of reliability.

    abstract::The outflow conductance (C(out)) of the cerebrospinal fluid (CSF) system is a parameter considered to be predictive in selection for hydrocephalus surgery. C(out) can be determined through an infusion test. A new apparatus for performing infusion tests in a standardized and automated way was developed. The objective w...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Andersson N,Malm J,Bäcklund T,Eklund A

    更新日期:2005-12-01 00:00:00

  • Impedance analyser module for EIT and spectroscopy using undersampling.

    abstract::In this paper we present the concept, the design and the test procedure for a DSP-based high-precision and high-performance wide-band (up to 10 MHz) bioimpedance analyser module for application in EIT or bioimpedance spectroscopy. The module implements a digital concept with appropriate signal conditioning hardware fo...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Dudykevych T,Gersing E,Thiel F,Hellige G

    更新日期:2001-02-01 00:00:00

  • PET(CO2) measurement and feature extraction of capnogram signals for extubation outcomes from mechanical ventilation.

    abstract::Capnography is a continuous and noninvasive method for carbon dioxide (CO2) measurement, and it has become the standard of care for basic respiratory monitoring for intubated patients in the intensive care unit. In addition, it has been used to adjust ventilatory parameters during mechanical ventilation (MV). However,...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Rasera CC,Gewehr PM,Domingues AM

    更新日期:2015-02-01 00:00:00

  • Assessment of cerebrospinal fluid outflow conductance using an adaptive observer--experimental and clinical evaluation.

    abstract::Idiopathic normal pressure hydrocephalus (INPH) patients have a disturbance in the dynamics of the cerebrospinal fluid (CSF) system. The outflow conductance, C, of the CSF system has been suggested to be prognostic for positive outcome after treatment with a CSF shunt. All current methods for estimation of C have draw...

    journal_title:Physiological measurement

    pub_type: 杂志文章


    authors: Andersson K,Manchester IR,Andersson N,Shiriaev A,Malm J,Eklund A

    更新日期:2007-11-01 00:00:00