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1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society最新文献

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An alpha motoneuron pool model to analyse EMG measured reflex output 用于分析肌电图测量反射输出的α运动神经元池模型
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-29 DOI: 10.1109/IEMBS.1992.5761402
P. J. Slot, Thomas Sinkjar, C. Baten, P. Veltink
{"title":"An alpha motoneuron pool model to analyse EMG measured reflex output","authors":"P. J. Slot, Thomas Sinkjar, C. Baten, P. Veltink","doi":"10.1109/IEMBS.1992.5761402","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761402","url":null,"abstract":"The intrinsic properties of the human soleus alpha motoneuron pool and the surface EMG are modelled. The model consists of an alpha motoneuron pool model generating the firing patterns of motor units in a human soleus muscle and a muscle model simulating the soleus surface EMG. The model is able to give a quantitative prediction of the motoneuron pool activity and the reflex EMG output at different excitation levels. The simulated data are consistent with experimentally obtained results. The simulations show that the reflex strength is highly dependent on the intrinsic threshold properties of the alpha motoneuron pool during static isometric muscle contractions.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"3 1","pages":"2358-2359"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89705795","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: 0
Distribution of MUAP amplitude and duration estimated from surface EMG 根据表面肌电图估计MUAP振幅和持续时间的分布
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-29 DOI: 10.1109/IEMBS.1992.5761492
H. Hermens, C. Baten, H. Boom, W. Rutten
{"title":"Distribution of MUAP amplitude and duration estimated from surface EMG","authors":"H. Hermens, C. Baten, H. Boom, W. Rutten","doi":"10.1109/IEMBS.1992.5761492","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761492","url":null,"abstract":"The objective of this study was to investigate the variability of the MUAP peak-peak amplitude and peak-peak time. A simple volume conduction model was developed and experimental data were obtained The outcome of the model was fitted with the experimental data.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"6 1","pages":"2344-2345"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79963660","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: 2
The effect of spatial clustering of motor fibers in a nerve fascicle on force recruitment during electrical stimulation 电刺激时神经束运动纤维空间聚集对力恢复的影响
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-29 DOI: 10.1109/IEMBS.1992.5761844
J. Smit, W. Rutten, T. A. Frieswijk, T. H. Rozijn, R. Busschers
{"title":"The effect of spatial clustering of motor fibers in a nerve fascicle on force recruitment during electrical stimulation","authors":"J. Smit, W. Rutten, T. A. Frieswijk, T. H. Rozijn, R. Busschers","doi":"10.1109/IEMBS.1992.5761844","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761844","url":null,"abstract":"Force recruitment curves have been determined using stimulation with an intraneural wire electrode. The recruitment curves vary with the position of the electrode in the fiber bundle. The results seem to support previous findings which indicated that the low density of nodes of Ranvier and a possible clustering of motor fibers within the fiber bundle might have a major impact on the efficacy of intraneural electrical stimulation.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"22 1","pages":"1389-1391"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78106672","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: 2
Multipolar intrafascicular stimulation 多极束内刺激
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-29 DOI: 10.1109/IEMBS.1992.5761843
J. H. Meier, W. Rutten
{"title":"Multipolar intrafascicular stimulation","authors":"J. H. Meier, W. Rutten","doi":"10.1109/IEMBS.1992.5761843","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761843","url":null,"abstract":"The suppressing effect of two intrafascicular anodes on the neural recruitment elicited by one intrafascicular cathode has been studied. Recruitment curves are calculated with a nerve stimulation model and are compared to experimental curves for the peroneal nerve of rat.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"40 1","pages":"1387-1388"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74963774","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: 0
Use of calcium sulfate for thermoluminescent thermal dosimetry 用硫酸钙进行热释光热剂量测定
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-29 DOI: 10.1109/IEMBS.1992.5760939
C. Marchal, A. Noel, P. Bey, P. Aletti, M. Nadi
{"title":"Use of calcium sulfate for thermoluminescent thermal dosimetry","authors":"C. Marchal, A. Noel, P. Bey, P. Aletti, M. Nadi","doi":"10.1109/IEMBS.1992.5760939","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5760939","url":null,"abstract":"The authors proposed the use of manganese-doped calcium sulfate irradiated for thermal dosimetry. This thermoluminescent compound shows a high sensitivity to temperatures ranging between 40°C and 50°C. Calibration procedure and experiments on sonicated meat are presented showing the feasibility of the method.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"18 1","pages":"228-230"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73211142","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: 0
Intelligent ST-segment follow-up for ischemia surveillance 智能st段缺血监测随访
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761288
F. Mora, Gianfranco Pssariello, R. Gil, Luis Castano, G. Carrault, Jean Louis Coatieux
{"title":"Intelligent ST-segment follow-up for ischemia surveillance","authors":"F. Mora, Gianfranco Pssariello, R. Gil, Luis Castano, G. Carrault, Jean Louis Coatieux","doi":"10.1109/IEMBS.1992.5761288","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761288","url":null,"abstract":"Several considerations about the problems in implementing intelligent monitoring schemes in ischemia surveillance are given. A layered approach to the design of an intelligent monitoring and management system for ischemic patients in the CCU/ICU is proposed. Lower layers for signal processing and alarm handling are specified and the main problems in their implementations are described.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"14 1","pages":"878-879"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73453511","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: 0
Human hand stiffness during discrete point-to-point multi-joint movement 离散点对点多关节运动时人手刚度
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761956
H. Gomi, Y. Koike, M. Kawato
{"title":"Human hand stiffness during discrete point-to-point multi-joint movement","authors":"H. Gomi, Y. Koike, M. Kawato","doi":"10.1109/IEMBS.1992.5761956","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761956","url":null,"abstract":"We compared dynamic hand stiffness during discrete multi-joint arm movement and static stiffness during posture control in order to investigate computational strategy for arm control by the central nervous system. Estimated stiffness during movement obtained by applying small perturbations were lower than those during static posture near the end of the movement. This result supports our simulation study that the virtual equilibrium trajectory of the hand is complicated in its shape to compensate nonlinear interaction forces of the multi-joint arm especially for fast movements.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"86 1","pages":"1628-1629"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73474107","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: 61
Prospects for finding unexpectedly low thresholds for the biological effects of exogenous ELF fields 寻找外源性极低频场生物效应的低阈值的前景
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761738
W. Pickard
{"title":"Prospects for finding unexpectedly low thresholds for the biological effects of exogenous ELF fields","authors":"W. Pickard","doi":"10.1109/IEMBS.1992.5761738","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761738","url":null,"abstract":"Seemingly trivial exogenous ELF fields can have readily detectable biological effects if there is sufficient concentration of the fields upon appropriate structures, if each structure so affected modulates an associated sensitive process, and if the outputs of an ensemble of such processes are subsequently integrated; this mechanism is illustrated by the well-known sensitivity of sharks and rays to applied electric fields. Moreover, if an exogenous influence affects a physiological variable at all and if the probability distribution of that variable is related to the incidence of an observable sequela, then the incidence of that sequela can be doubled by an arbitrarily small change of the influence if the observable sequela was sufficiently rare to begin with! Finally, it is asserted that neither a specialized sensory system in an aquatic organism nor a speculative mechanism by which the incidence of rare events might be increased is sufficient to demonstrate convincingly the existence of ELF bioeffects of relevance to humans: only positive experimental data, quantitatively replicable upon demand, suffice to do that; and the generation of such data should be the primary goal of ELF bioeffects research.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"249 1","pages":"2877-2878"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73528649","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: 1
Comparison of computerized exercise ECG parameters in detecting myocardial ischemia 计算机化运动心电图参数检测心肌缺血的比较
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761096
R. Lehtinen, H. Sievanen, J. Malmivuo
{"title":"Comparison of computerized exercise ECG parameters in detecting myocardial ischemia","authors":"R. Lehtinen, H. Sievanen, J. Malmivuo","doi":"10.1109/IEMBS.1992.5761096","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761096","url":null,"abstract":"The exercise ECG test is the most widely used method of evaluating myocardial ischemia, but its diagnostic accuracy is only about 70 %. Many studies introducing different diagnostic computerized exercise ECG parameters have been published, but according to the authors' knowledge there is no overall comparison of these parameters. We calculated 52 exercise ECG parameters from the ST-segment value, ST-segment shape and ST-segment/heart rate slope and compared the diagnostic power of these parameters by ROC-analysis. We found that ST-segment/heart rate slope has better diagnostic power than ST-segment depression or ST-segment shape alone. Another result was that the ST-segment shape seemed to be better diagnostic parameter than ST-segment depression when measuring an individual lead. However, further research with larger patient material is needed to get statistically significant differences between the parameters.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"17 1","pages":"535-536"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73631413","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: 1
Spectral analysis of the surface electrocardiogram in patients with Chagas disease 恰加斯病患者体表心电图的频谱分析
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761086
D. Jugo, Medina Ruben, Carrasco Hugo
{"title":"Spectral analysis of the surface electrocardiogram in patients with Chagas disease","authors":"D. Jugo, Medina Ruben, Carrasco Hugo","doi":"10.1109/IEMBS.1992.5761086","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761086","url":null,"abstract":"Âbstraet-Vàz present paper deals with the analysis of the High Resolution Surface Electrocardiogram in patients with Chagas disease. The spectral estimation technique is based on the Discrete Fourier Transfom (DFT). evaluated over a 300 milliseconds segment situated around the QRS wave in the averaged signal, corresponding to three orthogonal derivations X, Y and Z. The results are presented as a spectro-temporal mapping of the signal and a comparison between normal subjects and patients with Chagas' disease based on the area between 0 and 300 Hz for a 76 milliseconds frame including the end of the QRS.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"51 1","pages":"514-515"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73636931","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: 6
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