Pub Date : 1992-10-29DOI: 10.1109/IEMBS.1992.5761819
P. Veltink, R. Tijsmans, H. Franken, H. Boom
Knee joint acceleration and quadriceps torque can he estimate from the signals of two tangentially placed accelerometers. This enables the identification of quadriceps dynamics, loaded with a freely swinging lower leg, during eletrical stimulation.
{"title":"Identification of electrically stimulated quadriceps — Lower leg dynamics — The use of accelerometers for estimating knee joint acceleration and quadriceps torque","authors":"P. Veltink, R. Tijsmans, H. Franken, H. Boom","doi":"10.1109/IEMBS.1992.5761819","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761819","url":null,"abstract":"Knee joint acceleration and quadriceps torque can he estimate from the signals of two tangentially placed accelerometers. This enables the identification of quadriceps dynamics, loaded with a freely swinging lower leg, during eletrical stimulation.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"32 1","pages":"1339-1340"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76065751","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 : 1992-10-29DOI: 10.1109/IEMBS.1992.5761395
E. Goodall, Jon C. Christiansen
It is worthwhile for any engineer involved in the development or management of new technology to have some understanding of the laws regarding the protection of intellectual property. The following is an overview of the requirements and procedure for obtaining a patent, with particular attention given to issues which may be of concern to bioengineers.
{"title":"Patent practice basics for bioengineers","authors":"E. Goodall, Jon C. Christiansen","doi":"10.1109/IEMBS.1992.5761395","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761395","url":null,"abstract":"It is worthwhile for any engineer involved in the development or management of new technology to have some understanding of the laws regarding the protection of intellectual property. The following is an overview of the requirements and procedure for obtaining a patent, with particular attention given to issues which may be of concern to bioengineers.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"38 1","pages":"1147-1148"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76347607","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 : 1992-10-29DOI: 10.1109/IEMBS.1992.5761402
P. J. Slot, Thomas Sinkjar, C. Baten, P. Veltink
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.
{"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}
Pub Date : 1992-10-29DOI: 10.1109/IEMBS.1992.5761492
H. Hermens, C. Baten, H. Boom, W. Rutten
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.
{"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}
Pub Date : 1992-10-29DOI: 10.1109/IEMBS.1992.5761844
J. Smit, W. Rutten, T. A. Frieswijk, T. H. Rozijn, R. Busschers
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.
{"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}
Pub Date : 1992-10-29DOI: 10.1109/IEMBS.1992.5761843
J. H. Meier, W. Rutten
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.
{"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}
Pub Date : 1992-10-29DOI: 10.1109/IEMBS.1992.5761836
J. Holsheimer, J. Struijk
In a computer modeling study of epidural spinal cord stimulation using a longitudinal array of electrode contacts, the effect of contact geometry and contact combination on the threshold voltages for stimulation of dorsal column (DC) fibers and dorsal root (DR) fibers was investigated. It was concluded that DC-fiber stimulation will be favoured when a tripolar combination and small contact length and spacing are used, while DR-fiber stimulation will be favoured when unipolar stimulation and large contact length are used.
{"title":"Electrode geometry and preferential stimulation of spinal nerve fibers having different orientations: A modeling study","authors":"J. Holsheimer, J. Struijk","doi":"10.1109/IEMBS.1992.5761836","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761836","url":null,"abstract":"In a computer modeling study of epidural spinal cord stimulation using a longitudinal array of electrode contacts, the effect of contact geometry and contact combination on the threshold voltages for stimulation of dorsal column (DC) fibers and dorsal root (DR) fibers was investigated. It was concluded that DC-fiber stimulation will be favoured when a tripolar combination and small contact length and spacing are used, while DR-fiber stimulation will be favoured when unipolar stimulation and large contact length are used.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"19 1","pages":"1374-1375"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81840423","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 : 1992-10-29DOI: 10.1109/IEMBS.1992.5761838
J. Struijk, J. Holsheimer, G. Barolat, Jiping He
The potential distribution in volume conductor models of the spinal cord at cervical, midthoracic and lowthoracic levels, due to epidural stimulation, was, calculated. Treshold stimuli of modeled myelinated dorsal column and dorsal root fibers were calculated and were compared with perception thresholds obtained from measurements in patients at corresponding spinal levels.
{"title":"Spinal cord stimulation: Modeling results and clinical data","authors":"J. Struijk, J. Holsheimer, G. Barolat, Jiping He","doi":"10.1109/IEMBS.1992.5761838","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761838","url":null,"abstract":"The potential distribution in volume conductor models of the spinal cord at cervical, midthoracic and lowthoracic levels, due to epidural stimulation, was, calculated. Treshold stimuli of modeled myelinated dorsal column and dorsal root fibers were calculated and were compared with perception thresholds obtained from measurements in patients at corresponding spinal levels.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"73 1","pages":"1378-1379"},"PeriodicalIF":0.0,"publicationDate":"1992-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84280008","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 : 1992-10-29DOI: 10.1109/IEMBS.1992.5760939
C. Marchal, A. Noel, P. Bey, P. Aletti, M. Nadi
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.
{"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}
Pub Date : 1992-10-01DOI: 10.1109/IEMBS.1992.5761288
F. Mora, Gianfranco Pssariello, R. Gil, Luis Castano, G. Carrault, Jean Louis Coatieux
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.
{"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}
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