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1993 IEEE Annual Northeast Bioengineering Conference最新文献

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Vocal tract modeling as related to the use of an artificial larynx 与使用人工喉头有关的声道建模
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404409
R. Myrick, R. Yantorno
{"title":"Vocal tract modeling as related to the use of an artificial larynx","authors":"R. Myrick, R. Yantorno","doi":"10.1109/NEBC.1993.404409","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404409","url":null,"abstract":"The placement of an artificial larynx forward in the vocal tract, which results in a very different system from the normal larynx-vocal tract configuration, is considered. The consequences of this excitation relocation are studied. It is found that zeros are introduced into what is otherwise modeled as an all-pole system.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129764492","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: 3
Time-series based features for EMG pattern recognition: Preliminary results 基于时间序列特征的肌电模式识别:初步结果
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404442
R. Knox, D.H. Brooks, E. Manolakos, S. Markogiannakis
{"title":"Time-series based features for EMG pattern recognition: Preliminary results","authors":"R. Knox, D.H. Brooks, E. Manolakos, S. Markogiannakis","doi":"10.1109/NEBC.1993.404442","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404442","url":null,"abstract":"A summary of results for features obtained from upper limb electromyographic (EMG) signals is given. The features are based on the autoregressive (AR) model and include model coefficients, reflection coefficients, and cepstral coefficients. Some of these coefficients demonstrate potential for pattern recognition of upper limb movements for a EMG controlled prosthesis.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117323133","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: 4
Closed-loop controllers for anaesthesic drug delivery 麻醉药物输送的闭环控制器
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404434
D. O'Hara, B. Chen, Y. Zhu, J.K.-J. Li
{"title":"Closed-loop controllers for anaesthesic drug delivery","authors":"D. O'Hara, B. Chen, Y. Zhu, J.K.-J. Li","doi":"10.1109/NEBC.1993.404434","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404434","url":null,"abstract":"The extent of the usefulness and limitations of various engineering feedback control techniques in the delivery of anesthetic drugs is investigated. Particular emphasis is placed on the muscle relaxants. The closed-loop proportional-integral-derivat controller has been found to be popular and afford stability. Further improvement can be achieved with automated computer-control and adaptive control. A scheme for this is proposed.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115298165","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
A comparison of methods for estimating isometric recruitment curves in human quadriceps muscle 估计人四头肌等长再生曲线的方法比较
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404416
H. Beck, W. Durfee
{"title":"A comparison of methods for estimating isometric recruitment curves in human quadriceps muscle","authors":"H. Beck, W. Durfee","doi":"10.1109/NEBC.1993.404416","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404416","url":null,"abstract":"A study in which five methods for estimating isometric recruitment curves of electrically stimulated muscle were tested on the quadriceps muscles of able-bodied human subjects is discussed. Two discrete methods, steady-state step response and peak impulse response, and three continuous methods were examined. The continuous methods were ramp deconvolution via an idealized impulse response, ramp deconvolution via a measured impulse response and ramp response shifted via correlation. The results showed that variation in estimates of recruitment curves were dependent on the method of measurement and means of post-processing. The step response method is the traditional procedure for estimating recruitment curves; however, the ramp methods all appeared to offer acceptable accuracy. The correlation method was simplest and fastest to process. The peak impulse method was less repeatable and often differed from the other methods in predicting the stimulation threshold.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127501742","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
Finite element methods in impedance tomography and microwave imaging 阻抗层析成像和微波成像中的有限元方法
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404430
P. Meaney, M. Moskowitz
{"title":"Finite element methods in impedance tomography and microwave imaging","authors":"P. Meaney, M. Moskowitz","doi":"10.1109/NEBC.1993.404430","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404430","url":null,"abstract":"Electrical impedance tomography and microwave imaging methods for monitoring the temperature distribution during hyperthermia treatment is discussed. The numerical models, primarily finite element based, are described for each with attention to the differences in the governing partial differential equations. The reconstruction algorithms for determining the tissue properties are discussed. Finally, preliminary results using electrical impedance tomography to map conductivity changes during hyperthermia are shown.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"151 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114152512","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
Voltage-current characteristics of an AC arc for different electrode separations with application to electrosurgery II 交流电弧在不同电极间距下的电压电流特性及其在电外科手术中的应用II
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404425
J. Lacourse, A. Rothwell, S. Selikowitz
{"title":"Voltage-current characteristics of an AC arc for different electrode separations with application to electrosurgery II","authors":"J. Lacourse, A. Rothwell, S. Selikowitz","doi":"10.1109/NEBC.1993.404425","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404425","url":null,"abstract":"For pt. I, see ibid., p.35-6 (1993). A study of the effect of linear electrode displacement in various irrigant solutions commonly used during transurethral electrosurgery is discussed. Frequency and electrode type were held constant. A bipolar configuration was used. Results indicated that solutions such as glycine tap water, distilled water and sterile water displayed a capacitive response to the AC applied signal. Electrodes immersed in glycine, distilled water, and sterile water showed no arcing. A complete understanding of the effects of electrode separation and other parameters such as irrigant solutions may help engineers to design hazard free electrosurgical apparatus.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116922969","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: 3
Model-based segmentation of the brain from 3-D MRI using active surfaces 基于模型的脑分割从三维核磁共振利用活动表面
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404372
John Snell, M. Merickel, J. Goble, J. B. Brookeman, Neal F. Kassell
{"title":"Model-based segmentation of the brain from 3-D MRI using active surfaces","authors":"John Snell, M. Merickel, J. Goble, J. B. Brookeman, Neal F. Kassell","doi":"10.1109/NEBC.1993.404372","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404372","url":null,"abstract":"Traditional segmentation approaches have proven inadequate when faced with the anatomical complexity and variability exhibited by biological structures such as the brain. A 3-D extension to the 'snakes' algorithm has been implemented and used to segment the brain surface from MRI image volumes of the head in an effort to investigate model-based, top-down segmentation strategies. These active surfaces allow closed surfaces of complex objects to be recovered using a priori knowledge in the form of initial conditions and applied external forces. Preliminary results suggest that active surfaces may be initialized according to a preconceived model and adaptively deformed by image data to recover the desired object surface.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123223718","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: 9
Recreating oscillatory behavior in artificial nerve cells 在人工神经细胞中重建振荡行为
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404398
S. Wolpert, A.E. Chinwalla
{"title":"Recreating oscillatory behavior in artificial nerve cells","authors":"S. Wolpert, A.E. Chinwalla","doi":"10.1109/NEBC.1993.404398","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404398","url":null,"abstract":"The recreation of the phenomenon of cyclic inhibition between two artificial nerve cells is discussed. Implemented by means of postinhibitory rebound, it was achieved in a mutually inhibiting pair of identical nerve cell circuits, or neuromimes. Each neuromime is nominally self-excitatory, with a single inhibitory input, derived from the output of its counterpart. Postinhibitory rebound is accomplished by dynamically varying the synaptic weight of that inhibitory input. The neuromime employed is a comprehensive VLSI-based circuit with a host of features attributable to biological nerve cells. It was fabricated in two-micron CMOS technology with a total chip area of 0.6 square millimeters, and requires only a few passive discrete components for support and adjustment.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129784743","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
Possible explanations for tonometric variation of brain death model in swine 猪脑死亡模型血压计变异的可能解释
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404402
M. Merris, S.H. Nain, L. Sarma, J. LaCourse, S. Selikowitz
{"title":"Possible explanations for tonometric variation of brain death model in swine","authors":"M. Merris, S.H. Nain, L. Sarma, J. LaCourse, S. Selikowitz","doi":"10.1109/NEBC.1993.404402","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404402","url":null,"abstract":"The use of two miniature pigs as a model system to evaluate the use of tonometry for non-invasive monitoring of cerebral blood flow for the determination of brain death is discussed. Normal values of tonometric measurement were determined and plotted during experimentation. Brain death was simulated by sequentially occluding the arterial blood supply to the brain. Tonometric readings illustrated variations in intraocular pressure. Hypothetical theories are offered to systematically explain the differences and direct future research.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129870099","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
Fingerprint pattern recognition for medical uses-A frequency domain approach 医用指纹模式识别——一种频域方法
1993 IEEE Annual Northeast Bioengineering Conference Pub Date : 1993-03-18 DOI: 10.1109/NEBC.1993.404366
F. You, Y.Q. Shi, P. Engler
{"title":"Fingerprint pattern recognition for medical uses-A frequency domain approach","authors":"F. You, Y.Q. Shi, P. Engler","doi":"10.1109/NEBC.1993.404366","DOIUrl":"https://doi.org/10.1109/NEBC.1993.404366","url":null,"abstract":"A method of automatically classifying fingerprints into three groups, whorl, loop, and arch is described. It can help medical scientists to study the relationship between fingerprint patterns and medical disorders, such as breast cancer. In the research, a frequency domain approach that uses the feature of Fourier spectrum was developed; that is, prominent peaks in the spectrum give the principal direction of fingerprint patterns. Using the above feature, the authors obtain the principal direction of every subregion. The pattern of the whole image then can be determined. The frequency domain approach allows one to classify whorl faster and is less sensitive to the quality of fingerprint image, but it does not easily allow for the classification of arch and loop when triradii areas are too small.<<ETX>>","PeriodicalId":159783,"journal":{"name":"1993 IEEE Annual Northeast Bioengineering Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127576019","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: 3
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