Pub Date : 2016-05-15DOI: 10.1109/MeMeA.2016.7533773
I. Melis, M. P. Penna, Marta Murru, A. Pontis, M. Agus, S. Angioni
Endometriosis is a chronic disease that affects women of reproductive age. Chronic pelvic pain, dysmenorrhea, and dyspareunia are its main symptoms; pain alters the quality of life of the patient and affects her health. Since pain is a highly subjective experience, the purpose of this study is to assess the sensory component of pain perception in endometriosis, alongside the affective-emotional and cognitive aspects. These aspects were linked with anamnestic data, anxiety, and depression. We administered appropriate instruments in order to assess these dimensions (QUID - Italian Pain Questionnaire, Biberoglu's Scale, and the HADS Scale), and we evaluated their relationships.
{"title":"Multidimensional assessment of pain in women with endometriosis: Preliminary results of the experience in Cagliari","authors":"I. Melis, M. P. Penna, Marta Murru, A. Pontis, M. Agus, S. Angioni","doi":"10.1109/MeMeA.2016.7533773","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533773","url":null,"abstract":"Endometriosis is a chronic disease that affects women of reproductive age. Chronic pelvic pain, dysmenorrhea, and dyspareunia are its main symptoms; pain alters the quality of life of the patient and affects her health. Since pain is a highly subjective experience, the purpose of this study is to assess the sensory component of pain perception in endometriosis, alongside the affective-emotional and cognitive aspects. These aspects were linked with anamnestic data, anxiety, and depression. We administered appropriate instruments in order to assess these dimensions (QUID - Italian Pain Questionnaire, Biberoglu's Scale, and the HADS Scale), and we evaluated their relationships.","PeriodicalId":221120,"journal":{"name":"2016 IEEE International Symposium on Medical Measurements and Applications (MeMeA)","volume":"74 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":"130913471","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.2016.7533755
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.2016.7533705
O. Postolache, P. Girão, Alberto López, Francisco Javier Ferrero Martín, J. Pereira, G. Postolache
Serious games based physical therapy is currently gaining a lot of interest by the physiotherapists and game developers that are using new natural user interfaces devices to assure an easy interaction between the user under rehabilitation and his avatar immersed in a virtual reality scenario. Arm motion training, as part of stroke rehabilitation program, can be one of the main objectives of the serious games, and was the object of several serious games developed by our group, the previous works being followed by postural stability monitoring during rehabilitation developments. Thus, the balance analysis on static conditions and during the arm rehabilitation based on implemented serious games represents the objective of the work. The system presented in the paper combine Kinect Serious Game Framework and a developed force platform architecture characterized by Bluetooth communication capabilities that provide the data related to postural balance to be processed together with the upper limb training data for general evaluation of stroke rehabilitation outcome. Experimental results, including time and frequency analysis of the data obtained by the Kinect and force platform, are included in the paper.
{"title":"Postural balance analysis using force platform for K-theragame users","authors":"O. Postolache, P. Girão, Alberto López, Francisco Javier Ferrero Martín, J. Pereira, G. Postolache","doi":"10.1109/MeMeA.2016.7533705","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533705","url":null,"abstract":"Serious games based physical therapy is currently gaining a lot of interest by the physiotherapists and game developers that are using new natural user interfaces devices to assure an easy interaction between the user under rehabilitation and his avatar immersed in a virtual reality scenario. Arm motion training, as part of stroke rehabilitation program, can be one of the main objectives of the serious games, and was the object of several serious games developed by our group, the previous works being followed by postural stability monitoring during rehabilitation developments. Thus, the balance analysis on static conditions and during the arm rehabilitation based on implemented serious games represents the objective of the work. The system presented in the paper combine Kinect Serious Game Framework and a developed force platform architecture characterized by Bluetooth communication capabilities that provide the data related to postural balance to be processed together with the upper limb training data for general evaluation of stroke rehabilitation outcome. Experimental results, including time and frequency analysis of the data obtained by the Kinect and force platform, are included in the paper.","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":"130136194","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.2016.7533709
F. Martelli, S. Rossi, F. Frascarelli, M. Germanotta, M. Petrarca, E. Castelli, P. Cappa
The main object of this study is to quantify the effect of botulinum toxin on the dynamic ankle impedance (ZAnkle) in children with cerebral palsy (CP). The effect was evaluated by comparing the ZAnkle before and one month later the botulinum injection in gastrocnemius muscle. A cohort of six children with CP was involved in the study. All data were gathered by the pediatric version of the Anklebot (PediAnklebot), a backdrivable robot for ankle rehabilitation. The robot applied random torque perturbations to the ankle in both inversion-eversion (IE) and dorsi-plantar flexion (DP) direction. The ankle angular displacements and torques were gathered by encoders and load cells mounted on the PediAnklebot. The ZAnkle was estimated by a Multiple-Input Multiple-Output system identification (MIMO). The ZAnkle was evaluated in three frequency ranges: 0 Hz ≤ f ≤ 2 Hz, 2 Hz ≤ f ≤ 5 Hz, and 5 Hz ≤ f ≤ 8 Hz, addressed as low, mid and high frequency ranges. In each selected range the impedance anisotropy was quantified by the Direction Dependent Map (DDM) and the DDM shape was evaluated via the ZRatio, defined as the ratio between the maximum and the minimum value assumed by ZAnkle. Statistically significant decreases induced by the toxin treatment were found for ZAnkie in IE direction only in high frequency range and in DP direction for the three frequency ranges here examined. Moreover, a significant decrease of ZRatio emerged at mid frequency range. In conclusion, the botulinum toxin injection mainly affected the movement involving gastrocnemius, i.e. the dorsi-plantar flexion, and it did not affect the ankle impedance in inversion-eversion. These findings implied a clear variation of muscle elasticity and can provide an objective and quantitative support in the neurorehabilitation treatments of pediatric population with neurological diseases.
{"title":"Estimation of multivariable dynamic ankle impedance after botulinum toxin injection in children with cerebral palsy","authors":"F. Martelli, S. Rossi, F. Frascarelli, M. Germanotta, M. Petrarca, E. Castelli, P. Cappa","doi":"10.1109/MeMeA.2016.7533709","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533709","url":null,"abstract":"The main object of this study is to quantify the effect of botulinum toxin on the dynamic ankle impedance (ZAnkle) in children with cerebral palsy (CP). The effect was evaluated by comparing the ZAnkle before and one month later the botulinum injection in gastrocnemius muscle. A cohort of six children with CP was involved in the study. All data were gathered by the pediatric version of the Anklebot (PediAnklebot), a backdrivable robot for ankle rehabilitation. The robot applied random torque perturbations to the ankle in both inversion-eversion (IE) and dorsi-plantar flexion (DP) direction. The ankle angular displacements and torques were gathered by encoders and load cells mounted on the PediAnklebot. The ZAnkle was estimated by a Multiple-Input Multiple-Output system identification (MIMO). The ZAnkle was evaluated in three frequency ranges: 0 Hz ≤ f ≤ 2 Hz, 2 Hz ≤ f ≤ 5 Hz, and 5 Hz ≤ f ≤ 8 Hz, addressed as low, mid and high frequency ranges. In each selected range the impedance anisotropy was quantified by the Direction Dependent Map (DDM) and the DDM shape was evaluated via the ZRatio, defined as the ratio between the maximum and the minimum value assumed by ZAnkle. Statistically significant decreases induced by the toxin treatment were found for ZAnkie in IE direction only in high frequency range and in DP direction for the three frequency ranges here examined. Moreover, a significant decrease of ZRatio emerged at mid frequency range. In conclusion, the botulinum toxin injection mainly affected the movement involving gastrocnemius, i.e. the dorsi-plantar flexion, and it did not affect the ankle impedance in inversion-eversion. These findings implied a clear variation of muscle elasticity and can provide an objective and quantitative support in the neurorehabilitation treatments of pediatric population with neurological diseases.","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":"130338867","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.2016.7533812
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.2016.7533718
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}
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.
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