IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society最新文献_第3页

The TDS: a new device for comparing active and passive-guided touch. TDS:一种比较主动和被动引导触摸的新设备。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867883

B Richardson, M Symmons, R Accardi

引用次数: 21

Modeling study of peripheral nerve recording selectivity. 外周神经记录选择性的建模研究。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867874

J Perez-Orive, D M Durand

{"title":"Modeling study of peripheral nerve recording selectivity.","authors":"J Perez-Orive, D M Durand","doi":"10.1109/86.867874","DOIUrl":"https://doi.org/10.1109/86.867874","url":null,"abstract":"Recording of sensory information from afferent fibers can be used as feedback for the closed-loop control of neural prostheses. Clinical applications suggest that recording selectively from various nerve fascicles is important. Current nerve cuff electrodes are generally circular in shape and use a tripolar recording configuration. Preliminary experiments suggest that slowly changing the shape of the nerve to a flatter cross section can improve its selectivity. The objective of this work is to determine the effects of nerve reshaping and other cuff design parameters on the fascicular recording selectivity of a nerve cuff. A finite-element computer model of a multifasciculated nerve with different cuff electrodes was implemented to simulate the recordings. The model included the inhomogeneous and anisotropic properties of peripheral nerves. The recording selectivity was quantified with the use of a Selectivity Index. The results from the model provided information regarding the effect of using monopolar versus tripolar recording configurations, the length of the tripoles in tripolar recordings, the number of contacts that maximize the selectivity index, and the cuff length. Nerve reshaping was found to cause important recording selectivity improvements (106% average). These results provide specific criteria for the design of selectively recording nerve cuff electrodes.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"320-9"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867874","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833697","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}

引用次数: 52

Study of the control strategy of the quadriceps muscles in anterior knee pain. 膝关节前侧疼痛时股四头肌控制策略的研究。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867875

M Cesarelli, P Bifulco, M Bracale

{"title":"Study of the control strategy of the quadriceps muscles in anterior knee pain.","authors":"M Cesarelli, P Bifulco, M Bracale","doi":"10.1109/86.867875","DOIUrl":"https://doi.org/10.1109/86.867875","url":null,"abstract":"Anterior knee pain (AKP) is a common pathological condition, particularly among young people and athletes, associated to an abnormal motion of the patella during the bending of the knee and possibly dependent on a muscular or structural imbalance. A lack of synergy in the quadriceps muscles results in a dynamic misalignment of the patella, which in turn produces pain. AKP rehabilitative therapy consists of conservative treatment whose main objective is to strengthen the Vastus Medialis. The aim of this article is to study the quadriceps muscle control strategy in AKP patients during an isokinetic exercise. Analysis of the muscle activation strategy is important for an objective measurement of the knee functionality in that it helps to diagnose and monitor the rehabilitative treatment. Surface electromyography (EMG) from the three superficial muscles of the femoral quadriceps during a concentric isokinetic exercise has been analyzed along with the signals of knee joint position and torque. A group of 12 AKP patients has been compared with a group of 30 normal subjects. Analysis of the grand ensemble average of the EMG linear envelopes in AKP patients reveals significant modifications in Vastus Medialis activity compared to the other quadriceps muscles. In order to study the synergy of the muscles, temporal identifiers have been associated to the EMG linear envelopes. To this end, EMG linear envelope decomposition in Gaussian pulses turned out to be effective and the results highlight an appreciable delay in the activation of the Vastus Medialis in AKP patients. This muscular unbalance can explain the abnormal motion of the patella.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"330-41"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867875","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833698","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}

引用次数: 57

Analysis of muscle coordination strategies in cycling. 自行车运动中肌肉协调策略分析。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867878

B I Prilutsky, R J Gregory

{"title":"Analysis of muscle coordination strategies in cycling.","authors":"B I Prilutsky, R J Gregory","doi":"10.1109/86.867878","DOIUrl":"https://doi.org/10.1109/86.867878","url":null,"abstract":"The functional significance of the stereotypical muscle activation patterns used in skilled multi-joint tasks is not well understood. Optimization methods could provide insight into the functional significance of muscle coordination. The purpose of this study was to predict muscle force patterns during cycling by pushing and pulling the pedal using different optimization criteria and compare the predictions with electromyographic (EMG) patterns. To address the purpose of the study, 1) the contribution of muscle length and velocity changes to EMG-muscle force relationships during cycling was examined by comparing joint moments calculated from EMG and inverse dynamics, 2) patterns of individual muscle forces during cycling of five subjects were predicted using 13 different optimization criteria, and 3) the properties of the criterion with the best performance in predicting the normalized EMG were used to explain the features and functional significance of muscle coordination in cycling. It was shown that the criterion that minimizes the sum of muscle stresses cubed demonstrated the best performance in predicting the relative magnitude and patterns of muscle activation. Based on this criterion, it was suggested that the functional significance of muscle coordination strategy in cycling may be minimization of fatigue and/or perceived effort.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"362-70"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867878","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833701","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}

引用次数: 97

Spectral compression of the electromyographic signal due to decreasing muscle fiber conduction velocity. 由于肌纤维传导速度降低导致的肌电信号频谱压缩。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867877

M M Lowery, C L Vaughan, P J Nolan, M J O'Malley

{"title":"Spectral compression of the electromyographic signal due to decreasing muscle fiber conduction velocity.","authors":"M M Lowery, C L Vaughan, P J Nolan, M J O'Malley","doi":"10.1109/86.867877","DOIUrl":"https://doi.org/10.1109/86.867877","url":null,"abstract":"Spectral compression of the electromyographic (EMG) signal, due largely to decreasing muscle fiber conduction velocity, is commonly used as an indication of muscle fatigue. Current methods of estimating conduction velocity using characteristic frequencies such as the median frequency of the power spectrum, are based on an assumption of uniform spectral compression. To examine changes in the EMG frequency spectrum during fatigue, muscle fiber conduction velocity was measured during sustained, isometric contractions of the biceps brachii. Compression of the EMG power and amplitude spectra was simultaneously examined using the median frequency and an alternative method-the spectral distribution technique. The spectral distribution technique consistently gave a better estimate of the relative change in muscle fiber conduction velocity than either of the median frequencies. This was further examined using a physiologically based EMG simulation model, which confirmed these findings. The model indicated that firing statistics can significantly influence spectral compression, particularly the behavior of characteristic frequencies in the vicinity of the firing rates. The relative change in the median frequency, whether of the amplitude or frequency spectrum, was consistently greater than the relative change in conduction velocity. The most accurate indication of the relative change in conduction velocity was obtained by calculating the mean shift in the midfrequency region of the EMG amplitude spectrum using the spectral distribution technique.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"353-61"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867877","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833700","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}

引用次数: 94

Expanding the scope of the IEEE Transactions on Rehabilitation Engineering to explicitly include Neural Engineering. 扩展IEEE康复工程汇刊的范围，明确地包括神经工程。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/tre.2000.867868

C J Robinson

引用次数: 2

Wavelet and short-time Fourier transform analysis of electromyography for detection of back muscle fatigue. 小波变换与短时傅立叶变换在肌电图检测中的应用。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867887

P J Sparto, M Parnianpour, E A Barria, J M Jagadeesh

{"title":"Wavelet and short-time Fourier transform analysis of electromyography for detection of back muscle fatigue.","authors":"P J Sparto, M Parnianpour, E A Barria, J M Jagadeesh","doi":"10.1109/86.867887","DOIUrl":"https://doi.org/10.1109/86.867887","url":null,"abstract":"Measurement of the time-varying characteristics of the frequency content of trunk muscle electromyography is a method to quantify the amount of fatigue endured by workers during industrial tasks, as well as a tool that may guide the training and rehabilitation of healthy and injured workers. Quantification of the change of signal power within specific frequency ranges may shed greater insight into the fatigue process. Sixteen healthy male subjects performed isometric trunk extension at 70% of their maximum voluntary contraction. Surface electromyography from medial and lateral erector spinae, and latissimus dorsi locations were processed using the short-time Fourier transform (STFT) and wavelet transform. Linear regression quantified the time rate of change of median frequency as well as frequency specific STFT filter and wavelet scale measures. The median frequency from the short-time Fourier transform declined by 22 Hz/min from an initial value of 77 Hz on average. The wavelet and STFT filter measures demonstrated this decline to be caused by a reduction in 209-349 Hz signal power in addition to an increase in 7-88 Hz signal power. A significant reduction in median frequency and significant elevation in 13-22 Hz wavelet signal component was detected in about 90% of the cases, indicating their use for detecting and quantifying fatigue.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"433-6"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867887","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21834862","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}

引用次数: 88

Assessing human-robotic performance for vocational placement. 评估人类-机器人的职业安置表现。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867881

J L Schuyler, R M Mahoney

{"title":"Assessing human-robotic performance for vocational placement.","authors":"J L Schuyler, R M Mahoney","doi":"10.1109/86.867881","DOIUrl":"https://doi.org/10.1109/86.867881","url":null,"abstract":"This paper describes the results of an exploratory study of the use of standard occupational therapy assessment tests to measure the effective manipulation ability of individuals with disabilities using a robotic aid. Robotic manipulators have been explored for use as a vocational accommodation to support the job placement of individuals with severe manipulation disabilities. One of the factors that has impeded the transfer of this work is the lack of practical information that is relevant to the vocational placement process. The preliminary performance data presented in this paper provides an indication of robot-assisted manipulation skill that rehabilitation professionals may use to better understand the potential for use of this technology in providing greater job opportunities for people with severe manipulation impairment. Three different assessment tests were administered to nine different subjects with severe physical disabilities using a computer-controlled robotic workstation to perform the manipulation requirements of the tests. In all cases, the subjects, who were otherwise unable to physically perform the tasks without the robot, were able to perform manipulation tasks a factor of 20-700 times less than that of the performance indicated in published norms. Although these performance levels are modest in terms of nondisabled populations, supporting data is also provided that suggests that individuals with severe manipulation deficits could have access to a much wider range of vocational opportunities with an appropriate implementation of robot technology.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"394-404"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867881","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21834856","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}

引用次数: 27

Fuzzy EMG classification for prosthesis control. 用于假肢控制的模糊肌电分类。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867872

F H Chan, Y S Yang, F K Lam, Y T Zhang, P A Parker

{"title":"Fuzzy EMG classification for prosthesis control.","authors":"F H Chan, Y S Yang, F K Lam, Y T Zhang, P A Parker","doi":"10.1109/86.867872","DOIUrl":"https://doi.org/10.1109/86.867872","url":null,"abstract":"This paper proposes a fuzzy approach to classify single-site electromyograph (EMG) signals for multifunctional prosthesis control. While the classification problem is the focus of this paper, the ultimate goal is to improve myoelectric system control performance, and classification is an essential step in the control. Time segmented features are fed to a fuzzy system for training and classification. In order to obtain acceptable training speed and realistic fuzzy system structure, these features are clustered without supervision using the Basic Isodata algorithm at the beginning of the training phase, and the clustering results are used in initializing the fuzzy system parameters. Afterwards, fuzzy rules in the system are trained with the back-propagation algorithm. The fuzzy approach was compared with an artificial neural network (ANN) method on four subjects, and very similar classification results were obtained. It is superior to the latter in at least three points: slightly higher recognition rate; insensitivity to overtraining; and consistent outputs demonstrating higher reliability. Some potential advantages of the fuzzy approach over the ANN approach are also discussed.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"305-11"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867872","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833695","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}

引用次数: 406

The relationship between electrical stimulus and joint torque: a dynamic model. 电刺激与关节转矩的动态关系模型。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 2000-09-01 DOI: 10.1109/86.867876

M Ferrarin, A Pedotti

{"title":"The relationship between electrical stimulus and joint torque: a dynamic model.","authors":"M Ferrarin, A Pedotti","doi":"10.1109/86.867876","DOIUrl":"https://doi.org/10.1109/86.867876","url":null,"abstract":"The knowledge of the behavior of electrically activated muscles is an important requisite for the development of functional electrical stimulation (FES) systems to restore mobility to persons with paralysis. The aim of this work was to develop a model capable of relating electrical parameters to dynamic joint torque for FES applications. The knee extensor muscles, stimulated using surface electrodes, were used for the experimental preparation. Both healthy subjects and people with paraplegia were tested. The dynamics of the lower limb were represented by a nonlinear second order model, which took account of the gravitational and inertial characteristics of the anatomical segments as well as the damping and stiffness properties of the knee joint. The viscous-elastic parameters of the system were identified experimentally through free pendular movements of the leg. Leg movements induced by quadriceps stimulation were acquired too, using a motion analysis system. Results showed that, for the considered experimental conditions, a simple one-pole transfer function is able to model the relationship between stimulus pulsewidth (PW) and active muscle torque. The time constant of the pole was found to depend on the stimulus pattern (ramp or step) while gain was directly dependent on stimulation frequency.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"8 3","pages":"342-52"},"PeriodicalIF":0.0,"publicationDate":"2000-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.867876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21833699","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}

引用次数: 199