Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533728
D. L. Carní, D. Grimaldi, P. F. Sciammarella, A. Nastro, F. Lamonaca, M. Vasile
In the mineral part of the teeth the calcium phosphates and calcium carbonates are combined in a collagen with the mucopolysaccharides of the organic matrix. The infection on the tooth surface caused by bacteria can modify the tooth structures resulting in the tooth decay. In order to determine the modification on the tooth structure the use of thermal analysis technique is proposed. With this aim is fundamental the definition of an experimental protocol for the preparation of the sample under examination that does not modify the structure of the tooth. Preliminary experimental results confirm the capability of the measurement technique pointed out to correctly classify the modification of the tooth structure due to the aging or the carious.
{"title":"Measurement technique for the healty and carious teeth based on thermal analysis","authors":"D. L. Carní, D. Grimaldi, P. F. Sciammarella, A. Nastro, F. Lamonaca, M. Vasile","doi":"10.1109/MeMeA.2016.7533728","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533728","url":null,"abstract":"In the mineral part of the teeth the calcium phosphates and calcium carbonates are combined in a collagen with the mucopolysaccharides of the organic matrix. The infection on the tooth surface caused by bacteria can modify the tooth structures resulting in the tooth decay. In order to determine the modification on the tooth structure the use of thermal analysis technique is proposed. With this aim is fundamental the definition of an experimental protocol for the preparation of the sample under examination that does not modify the structure of the tooth. Preliminary experimental results confirm the capability of the measurement technique pointed out to correctly classify the modification of the tooth structure due to the aging or the carious.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129261370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533764
J. Kulon, M. Voysey, A. Partlow, P. Rogers, C. Gibson
A review of the current protocols and techniques for the anthropometric measurements and postural assessment for wheelchair users and individuals with severe musculoskeletal problems was given. It was concluded that both contact and non contact methods have a number of significant limitations including time consuming measurement procedure, high cost and risk of excessive exposure to radiation. Many current approaches do not enable clinicians to accurately record and analyze the patient's musculoskeletal configuration. The challenge still remains to combine the body shape data with the precise identification and localization of anatomical landmarks for postural assessment. To address the need for easy to use, low cost, reliable measurement of anatomical landmarks ultrasound measurement system has been proposed. The main elements of the system are: ultrasound transmitters, receiver, digital-analog converter, signal conditioning equipment and laptop executing the signal processing algorithm. The prototype of the system was build and tested. The preliminary measurements of ultrasonic signals were realized and demonstrated the potential for this technique to be used in anthropometric and postural assessments in the future.
{"title":"Development of a system for anatomical landmarks localization using ultrasonic signals","authors":"J. Kulon, M. Voysey, A. Partlow, P. Rogers, C. Gibson","doi":"10.1109/MeMeA.2016.7533764","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533764","url":null,"abstract":"A review of the current protocols and techniques for the anthropometric measurements and postural assessment for wheelchair users and individuals with severe musculoskeletal problems was given. It was concluded that both contact and non contact methods have a number of significant limitations including time consuming measurement procedure, high cost and risk of excessive exposure to radiation. Many current approaches do not enable clinicians to accurately record and analyze the patient's musculoskeletal configuration. The challenge still remains to combine the body shape data with the precise identification and localization of anatomical landmarks for postural assessment. To address the need for easy to use, low cost, reliable measurement of anatomical landmarks ultrasound measurement system has been proposed. The main elements of the system are: ultrasound transmitters, receiver, digital-analog converter, signal conditioning equipment and laptop executing the signal processing algorithm. The prototype of the system was build and tested. The preliminary measurements of ultrasonic signals were realized and demonstrated the potential for this technique to be used in anthropometric and postural assessments in the future.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133272127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533810
J. Joseph, P. Nabeel, M. Shah, M. Sivaprakasam
Cardiovascular diseases are the leading cause of death around the world. Non-invasive estimation of arterial parameters is significant in the early detection of cardiovascular diseases. In this work, we present an arterial compliance probe for calibration-free evaluation of carotid pulse pressure. This novel cuffless measurement technique uses dual magnetic plethysmograph (MPG) transducers for carotid local pulse wave velocity (PWV) measurement and single element ultrasound transducer for measuring arterial dimensions. Proposed arterial compliance probe can acquire two blood pulse waveforms and arterial diameter parameters simultaneously, which are then utilized in cycle-to-cycle estimation of arterial local PWV and pulse pressure without any subject or population specific calibration. The design of compliance probe and measurement system was verified by in-vivo trials. Accurate local PWV measurement and calibration free estimation of carotid pulse pressure was also validated by in-vivo studies. Initial results indicate a strong potential of MPG - Ultrasound arterial compliance probe in continuous, cuffless evaluation of blood pressure (BP) from superficial arteries.
{"title":"Arterial compliance probe for calibration free pulse pressure measurement","authors":"J. Joseph, P. Nabeel, M. Shah, M. Sivaprakasam","doi":"10.1109/MeMeA.2016.7533810","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533810","url":null,"abstract":"Cardiovascular diseases are the leading cause of death around the world. Non-invasive estimation of arterial parameters is significant in the early detection of cardiovascular diseases. In this work, we present an arterial compliance probe for calibration-free evaluation of carotid pulse pressure. This novel cuffless measurement technique uses dual magnetic plethysmograph (MPG) transducers for carotid local pulse wave velocity (PWV) measurement and single element ultrasound transducer for measuring arterial dimensions. Proposed arterial compliance probe can acquire two blood pulse waveforms and arterial diameter parameters simultaneously, which are then utilized in cycle-to-cycle estimation of arterial local PWV and pulse pressure without any subject or population specific calibration. The design of compliance probe and measurement system was verified by in-vivo trials. Accurate local PWV measurement and calibration free estimation of carotid pulse pressure was also validated by in-vivo studies. Initial results indicate a strong potential of MPG - Ultrasound arterial compliance probe in continuous, cuffless evaluation of blood pressure (BP) from superficial arteries.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115880382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533755
I. Mahbub, S. Islam
This paper demonstrates a novel scheme for converting analog biomedical signal to a M-ary PPM (Pulse Position Modulation) modulated signal to be transmitted using UWB (ultra-wideband) wireless link. PPM modulation provides higher data rate than on-off keying (OOK) or pulse amplitude modulation (PAM) as more than one bit can be represented per symbol. The proposed scheme eliminates the use of power hungry ADC (analog-to-digital converter) blocks that are used in conventional biosensor read-out circuitry. This scheme also enables the option to modify the sampling rate of the acquired signal without changing the power consumption of the overall system. Implemented using a standard 180nm CMOS process, the readout circuitry along with the UWB transmitter consume only 47 μA current with 1.8 V supply voltage.
{"title":"A low power pulse position modulation based ultra-wideband transmitter for implantable sensors","authors":"I. Mahbub, S. Islam","doi":"10.1109/MeMeA.2016.7533755","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533755","url":null,"abstract":"This paper demonstrates a novel scheme for converting analog biomedical signal to a M-ary PPM (Pulse Position Modulation) modulated signal to be transmitted using UWB (ultra-wideband) wireless link. PPM modulation provides higher data rate than on-off keying (OOK) or pulse amplitude modulation (PAM) as more than one bit can be represented per symbol. The proposed scheme eliminates the use of power hungry ADC (analog-to-digital converter) blocks that are used in conventional biosensor read-out circuitry. This scheme also enables the option to modify the sampling rate of the acquired signal without changing the power consumption of the overall system. Implemented using a standard 180nm CMOS process, the readout circuitry along with the UWB transmitter consume only 47 μA current with 1.8 V supply voltage.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117331967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533770
A. Borboni, Marco Maddalena, Alireza Rastegarpanah, M. Saadat, F. Aggogeri
Wheelchair-Mounted Robotic Arms have been used to help impaired people to reach objects and perform essential activities in an autonomous way. Different available models are presented in this paper and a simple design is proposed to improve the kinematic performances of the integrated system in order to allow the user to increase its capability of interaction with home environment. To this end, a linear drive has been added to the Raptor model in order to move along the wheelchair. The benefit of the proposed development has been proved with a kinematic performance assessment procedure, which has analyzed critical points in the 3D space, providing 26% increase in performance with respect to the existing solution.
{"title":"Kinematic performance enhancement of wheelchair-mounted robotic arm by adding a linear drive","authors":"A. Borboni, Marco Maddalena, Alireza Rastegarpanah, M. Saadat, F. Aggogeri","doi":"10.1109/MeMeA.2016.7533770","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533770","url":null,"abstract":"Wheelchair-Mounted Robotic Arms have been used to help impaired people to reach objects and perform essential activities in an autonomous way. Different available models are presented in this paper and a simple design is proposed to improve the kinematic performances of the integrated system in order to allow the user to increase its capability of interaction with home environment. To this end, a linear drive has been added to the Raptor model in order to move along the wheelchair. The benefit of the proposed development has been proved with a kinematic performance assessment procedure, which has analyzed critical points in the 3D space, providing 26% increase in performance with respect to the existing solution.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533812
A. Várkonyi-Kóczy, J. Tóth
Vision/color vision is one of the main senses of human creatures. Recently, the improvement of the color capturing capability has come into focus of researchers from two aspects. On one hand scientists want to improve the visual experience of healthy people (i.e. having good color vision facilities) while on the other aim to counteract color vision problems of color deficient persons. In this paper, a new filtering method is proposed which may offer partial solution to both problems. The technique applies simple and quick fuzzy measurement of the amount of information in the different color domains of a scene in order to be able to determine the necessary characteristics of transforming filters which may ensure the optimal or quasi optimal assignment of spectral distribution via modifying the artificial lighting.
{"title":"Improving color sensing by applying fuzzy information measurement based spectral power distribution filtering","authors":"A. Várkonyi-Kóczy, J. Tóth","doi":"10.1109/MeMeA.2016.7533812","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533812","url":null,"abstract":"Vision/color vision is one of the main senses of human creatures. Recently, the improvement of the color capturing capability has come into focus of researchers from two aspects. On one hand scientists want to improve the visual experience of healthy people (i.e. having good color vision facilities) while on the other aim to counteract color vision problems of color deficient persons. In this paper, a new filtering method is proposed which may offer partial solution to both problems. The technique applies simple and quick fuzzy measurement of the amount of information in the different color domains of a scene in order to be able to determine the necessary characteristics of transforming filters which may ensure the optimal or quasi optimal assignment of spectral distribution via modifying the artificial lighting.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"708 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116123053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533769
Madison Cohen-McFarlane, J. Green, R. Goubran, F. Knoefel
Heart failure affects 22 million people worldwide. Current diagnosis techniques are based on a combination of medical history and physical examination performed by a physician. Non-invasive continuous monitoring of patient health and physiology are part of a growing research field. Pressure sensitive mats have been used to estimate force, analyze bed transfers, and monitor breathing patterns during sleep. This paper describes the application of pressure sensitive mats to identify small changes in mass distribution (<;1% of body mass) as a model of fluid retention that occurs with congestive heart failure (CHF). This paper employs a recently developed anthropometric model to demonstrate that the addition of a 100g mass at the ankle, shin, knee, thigh, and bladder regions were detectable under ideal conditions. A number of confounding factors that may influence real-world measurements are discussed. Although preliminary, these findings suggest that pressure sensitive mats may form the basis for a novel non-invasive system to assist physicians in monitoring CHF by tracking associated fluid retention and redistribution over the course of a night.
{"title":"Monitoring congestive heart failure using pressure-sensitive mats","authors":"Madison Cohen-McFarlane, J. Green, R. Goubran, F. Knoefel","doi":"10.1109/MeMeA.2016.7533769","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533769","url":null,"abstract":"Heart failure affects 22 million people worldwide. Current diagnosis techniques are based on a combination of medical history and physical examination performed by a physician. Non-invasive continuous monitoring of patient health and physiology are part of a growing research field. Pressure sensitive mats have been used to estimate force, analyze bed transfers, and monitor breathing patterns during sleep. This paper describes the application of pressure sensitive mats to identify small changes in mass distribution (<;1% of body mass) as a model of fluid retention that occurs with congestive heart failure (CHF). This paper employs a recently developed anthropometric model to demonstrate that the addition of a 100g mass at the ankle, shin, knee, thigh, and bladder regions were detectable under ideal conditions. A number of confounding factors that may influence real-world measurements are discussed. Although preliminary, these findings suggest that pressure sensitive mats may form the basis for a novel non-invasive system to assist physicians in monitoring CHF by tracking associated fluid retention and redistribution over the course of a night.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126882565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533745
Xingchen Wang, Maria Kyrarini, Danijela Ristić-Durrant, M. Spranger, A. Gräser
In this paper, a novel method for monitoring the changes in gait joint angle trajectories recorded using the low-cost and wearable Inertial Measurement Units (IMU) is presented. The introduced method is based on Dynamic Time Warping (DTW), an algorithm commonly used for evaluating the similarity of two time series which may vary in time and speed. DTW is employed as the measure of distance between two gait trajectories taken in different time instances, which could be used as an intuitive and effective measure for the evaluation of gait performances. The experimental results presented in the paper demonstrate that the proposed method is applicable for clinically relevant applications and is consequently adaptable to patients with diseases characterized with gait disorders and to different walking scenarios. The proposed method was firstly validated by applying the DTW-based measure on gait trajectories of five healthy subjects recorded while simulating different levels of walking disabilities. Then proposed measure was applied to estimate the distance between the “healthy” gait trajectories and gait trajectories of three patients with Parkinson's disease (PD) while performing single-task and dual-task overground walking. Also, the proposed measure was demonstrated as an effective measure for monitoring the changes in gait patterns of a PD patient before and after medication-based treatment. This result indicates potential use of proposed method for effective pharmacological management of PD.
{"title":"Monitoring of gait performance using dynamic time warping on IMU-sensor data","authors":"Xingchen Wang, Maria Kyrarini, Danijela Ristić-Durrant, M. Spranger, A. Gräser","doi":"10.1109/MeMeA.2016.7533745","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533745","url":null,"abstract":"In this paper, a novel method for monitoring the changes in gait joint angle trajectories recorded using the low-cost and wearable Inertial Measurement Units (IMU) is presented. The introduced method is based on Dynamic Time Warping (DTW), an algorithm commonly used for evaluating the similarity of two time series which may vary in time and speed. DTW is employed as the measure of distance between two gait trajectories taken in different time instances, which could be used as an intuitive and effective measure for the evaluation of gait performances. The experimental results presented in the paper demonstrate that the proposed method is applicable for clinically relevant applications and is consequently adaptable to patients with diseases characterized with gait disorders and to different walking scenarios. The proposed method was firstly validated by applying the DTW-based measure on gait trajectories of five healthy subjects recorded while simulating different levels of walking disabilities. Then proposed measure was applied to estimate the distance between the “healthy” gait trajectories and gait trajectories of three patients with Parkinson's disease (PD) while performing single-task and dual-task overground walking. Also, the proposed measure was demonstrated as an effective measure for monitoring the changes in gait patterns of a PD patient before and after medication-based treatment. This result indicates potential use of proposed method for effective pharmacological management of PD.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129267555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MEMEA.2016.7533747
D. Borzelli, L. Gastaldi, S. Pastorelli, T. Vieira, A. Botter, J. Takagi, Ryo Takeda, S. Tadano
Human body Center of Mass (CoM) and Center of Pressure (CoP) kinematics are related to stability and balance control. However their evaluation can only be performed in motion analysis lab using different techniques. One of the more accurate is based on the segmental method, in which the body is modelled as a set of rigid bodies, each of which has different mass properties. In this study, we proposed an alternative estimation of the CoM and CoP, based on the segmental method and the 3D scanning of the human body. Knowing the CoM of each segment, the position of the overall CoM and CoP for poses different from the one used during the body acquisition could be predicted. The proposed method was validated by asking to a subject to assume different postures while standing on a force platform by comparing the resulting CoP with the one estimated with the segmental model. Although the approximations introduced in the model results were comparable.
{"title":"Estimation of the CoM and CoP using a 3D body scanning systems: Validation with force plate: A case study","authors":"D. Borzelli, L. Gastaldi, S. Pastorelli, T. Vieira, A. Botter, J. Takagi, Ryo Takeda, S. Tadano","doi":"10.1109/MEMEA.2016.7533747","DOIUrl":"https://doi.org/10.1109/MEMEA.2016.7533747","url":null,"abstract":"Human body Center of Mass (CoM) and Center of Pressure (CoP) kinematics are related to stability and balance control. However their evaluation can only be performed in motion analysis lab using different techniques. One of the more accurate is based on the segmental method, in which the body is modelled as a set of rigid bodies, each of which has different mass properties. In this study, we proposed an alternative estimation of the CoM and CoP, based on the segmental method and the 3D scanning of the human body. Knowing the CoM of each segment, the position of the overall CoM and CoP for poses different from the one used during the body acquisition could be predicted. The proposed method was validated by asking to a subject to assume different postures while standing on a force platform by comparing the resulting CoP with the one estimated with the segmental model. Although the approximations introduced in the model results were comparable.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129449667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533718
L. Iuppariello, G. D'Addio, G. Pagano, A. Biancardi, M. Romano, P. Bifulco, M. Cesarelli
The preservation of stability and body coordination in humans is assured by the correct working of the postural control system. Usually, postural oscillations is measured by the magnitude of center of pressure (CoP) movement over time. The conventional parameters in frequency domain to quantify changes of the CoP dynamics are estimated using Fourier spectral methods. However, considering the non-stationarity of the CoP signals, the Fourier approach, which breaks a time series signal into various sine wave frequency components, is not adapt. Aim of this work is to compare the wavelet decomposition analysis and the Fourier analysis, in measuring the power spectral distribution of the CoP traces, derived by Sensoria fitness (SF) e-textile socks, in three different frequency bands. Although wavelets analysis (WLT) has shown as a better technique than Fourier (FFT) in the resolution of the CoP oscillatory components, the overall spectral power modifications in their principal frequency bands have not yet been described. Particularly, the spectral power has been calculated in bands I (0.02-0.1 Hz), II (0.2-0.3), III (0.3-0.6), in percent values of the total spectral power.
人体稳定性和身体协调性的保持是由姿势控制系统的正确工作来保证的。通常，体位振荡是通过压力中心(CoP)运动随时间的大小来测量的。利用傅立叶谱法估计了用于量化CoP动力学变化的常规频域参数。然而，考虑到CoP信号的非平稳性，将时间序列信号分解成多个正弦波频率分量的傅里叶方法并不适用。本研究的目的是比较小波分解分析和傅立叶分析在测量三个不同频段Sensoria fitness (SF)电子纺织袜子衍生的CoP走线的功率谱分布方面的差异。虽然小波分析(WLT)已被证明是一种比傅里叶(FFT)更好的技术，在CoP振荡分量的分辨率，总体频谱功率的修改在其主频段尚未被描述。特别是，以总频谱功率的百分比值计算了波段I (0.02-0.1 Hz)， II (0.2-0.3)， III(0.3-0.6)的频谱功率。
{"title":"Effects of wavelets analysis on power spectral distributions in posturographic signal processing","authors":"L. Iuppariello, G. D'Addio, G. Pagano, A. Biancardi, M. Romano, P. Bifulco, M. Cesarelli","doi":"10.1109/MeMeA.2016.7533718","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533718","url":null,"abstract":"The preservation of stability and body coordination in humans is assured by the correct working of the postural control system. Usually, postural oscillations is measured by the magnitude of center of pressure (CoP) movement over time. The conventional parameters in frequency domain to quantify changes of the CoP dynamics are estimated using Fourier spectral methods. However, considering the non-stationarity of the CoP signals, the Fourier approach, which breaks a time series signal into various sine wave frequency components, is not adapt. Aim of this work is to compare the wavelet decomposition analysis and the Fourier analysis, in measuring the power spectral distribution of the CoP traces, derived by Sensoria fitness (SF) e-textile socks, in three different frequency bands. Although wavelets analysis (WLT) has shown as a better technique than Fourier (FFT) in the resolution of the CoP oscillatory components, the overall spectral power modifications in their principal frequency bands have not yet been described. Particularly, the spectral power has been calculated in bands I (0.02-0.1 Hz), II (0.2-0.3), III (0.3-0.6), in percent values of the total spectral power.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128572031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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