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Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference最新文献

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Estimating human hearing thresholds using potentials that follow sinusoidally amplitude modulated (SAM) tones 利用正弦波调幅(SAM)音调后的电位估计人的听力阈值
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154612
T.J. Gennosa, R. Batra, S. Kuwada
{"title":"Estimating human hearing thresholds using potentials that follow sinusoidally amplitude modulated (SAM) tones","authors":"T.J. Gennosa, R. Batra, S. Kuwada","doi":"10.1109/NEBC.1991.154612","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154612","url":null,"abstract":"Binaural sinusoidally amplitude modulated (SAM) tones were used to evoke potentials from the scalp that followed the modulation envelope. It is examined whether this amplitude-modulation following response (AMFR), with modulation frequencies near 40 Hz, can be used to estimate frequency-specific hearing thresholds by two methods: (1) decreasing sound intensity until the AMFR could no longer be evoked and (2) linearly extrapolating the amplitude-intensity function to a zero volt response. Both methods yielded estimates that were within 15 dB of the behavioral threshold. A method that could identify bilateral sensitivity differences of about 20 dB was also developed. This involved comparing AMFRs to binaural SAM tones when their envelopes were in- or out-of-phase. Threshold estimates suggest that the AMFR may be an effective tool for assessing hearing thresholds across the audiometric range of frequencies.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131718892","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
A method for monitoring finger and palm pressure during perception threshold testing of compression neuropathies 一种在压迫性神经病知觉阈值测试中监测手指和手掌压力的方法
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154616
G. L. Beauregard, J. Lacourse
{"title":"A method for monitoring finger and palm pressure during perception threshold testing of compression neuropathies","authors":"G. L. Beauregard, J. Lacourse","doi":"10.1109/NEBC.1991.154616","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154616","url":null,"abstract":"Small changes in finger and palm pressure were detected and recorded with force sensing resistor (FSR) circuitry. This was accomplished once an optimum value of sensitivity adjustment was determined. It was found that a value of approximately 100 k Omega for the sensitivity resistor allowed minimal force (less than 100 g) to cause appreciable change in the output of the sensor's amplifier circuitry. Preliminary results with FSRs indicate that they are an effective means of monitoring finger and palm pressure during perception threshold testing. Initial modeling studies of the amplifier with the FSR indicate that a linear relationship exists between sensor resistance and output voltage for a large range of pressures.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130166376","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
Modeling neurite outgrowth on laminin in vitro 层粘连蛋白对神经突生长的体外模拟
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154629
H. Buettner, R. Pittman
{"title":"Modeling neurite outgrowth on laminin in vitro","authors":"H. Buettner, R. Pittman","doi":"10.1109/NEBC.1991.154629","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154629","url":null,"abstract":"Experimental parameters were measured and incorporated into a mathematical model to describe axonal outgrowth on the extracellular matrix molecule, laminin, in vitro. To elucidate the role of laminin and other basement membrane components in axonal growth and guidance, a systematic analysis of the effects of these various molecules on outgrowth characteristics such as the rate and direction of growth is required. Ideal parameters for measuring these characteristics appear to be the root-mean-square speed, s, and the directional persistence time, P, of the growing axon tip. These quantities were measured for neurons obtained from the superior cervical ganglia of one day-old neonatal rats, mechanically dissociated into single cells and cultured in serum-free medium. To illustrate the potential effects of the observed concentration dependence of these parameters on axonal outgrowth, the ability of an axon to traverse a laminin substrate was examined using a hypothetical model for the axon trajectory based on the measured s and P.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856239","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
Extracting knowledge from case databases 从案例数据库中提取知识
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154677
S. Fertig
{"title":"Extracting knowledge from case databases","authors":"S. Fertig","doi":"10.1109/NEBC.1991.154677","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154677","url":null,"abstract":"The FGP machine is a software architecture that uses similarity-based reminding to make the domain knowledge contained in the data explicit, and then brings that knowledge to bear on information retrieval and machine learning tasks. The FGP machine's goal is to use the cases themselves to drive the system. The system should reason on the basis of specific cases and groups of cases, and should therefore be able to cite specific precedents (including precedents that are themselves incompletely understood), to modify its behavior on the basis of every new information-providing transaction, and to subsume the functions of a conventional information-retrieval system. The author explains the model, and then presents test results for a prototype implementation on a diagnosis task.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132530936","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
A Hall-effect magnetic field detector 霍尔效应磁场探测器
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154671
F.A. Phan
{"title":"A Hall-effect magnetic field detector","authors":"F.A. Phan","doi":"10.1109/NEBC.1991.154671","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154671","url":null,"abstract":"An accurate low-cost field detector was designed to measure the magnitude of magnetic flux density generated by 60 Hz AC. The Hall effect magnetic field detector was designed as an exposure assessment instrument that can provide the information needed to accurately conduct these epidemiologic studies. Though fields generated by high voltage transmission lines seem to be the focus of much public concern, many common household appliances are sources of potentially high magnetic fields as well. Magnetic field measurements of some appliances were recorded. By using three orthogonally mounted analog Hall sensors and analog computation circuits, field measurements in gauss are expressed in terms of RMS voltage.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134348705","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 comparative study of rowing biomechanics 划船生物力学的比较研究
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154679
E. Rosow
{"title":"A comparative study of rowing biomechanics","authors":"E. Rosow","doi":"10.1109/NEBC.1991.154679","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154679","url":null,"abstract":"The author describes an instrumentation package that has been developed to collect data for the study of rowing biomechanics. Currently, this system is interfaced with a Concept II rowing ergometer. The system acquires and analyzes handle and footstretcher kinetics as well as handle, limb segment and seat kinetics. Given these measurements, a biomechanical model of ergometer rowing can be developed. The author also presents representative data and results to illustrate the application of this technology to rowing performance assessment. Examples are drawn from a variety of different performance levels.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125847810","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
From airways to alveoli: a 3-D perspective of lung structure 从气道到肺泡:肺结构的三维透视
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154581
R. A. Rogers
{"title":"From airways to alveoli: a 3-D perspective of lung structure","authors":"R. A. Rogers","doi":"10.1109/NEBC.1991.154581","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154581","url":null,"abstract":"Three-dimensional (3-D) reconstruction techniques used to assess the configuration and composition of the lung and its cellular constituents are reviewed. Advantages and limitations of 3-D reconstructions are also addressed. It is argued that 3-D reconstructions will continue to provide shape and conformational information on structural features associated with air flow (airways), gas exchange (parenchymal structure) and cell physiology (cell structure). Although laborious, 3-D reconstruction provides information and insight on lung structure not available through other means.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"295 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120897946","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
Scanning acoustic microscopy and human femoral bone remodelling 扫描声学显微镜和人类股骨重塑
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154630
H. Berndt, M. Zimmerman, A. Meunier, J. Parsons, J. Carpinelli
{"title":"Scanning acoustic microscopy and human femoral bone remodelling","authors":"H. Berndt, M. Zimmerman, A. Meunier, J. Parsons, J. Carpinelli","doi":"10.1109/NEBC.1991.154630","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154630","url":null,"abstract":"An experiment was conducted to evaluate and analyze the acoustic properties of the cortical, diaphyseal bone of the human femur. The analysis not only included a regional analysis, but also an analysis of the three circumferential zones of the bone, the periosteal, middle, and endosteal zones. Differences between individual pairs as well as the transition of properties between the periosteal and endosteal bone were observed. Circular averaging over the sections as well as the generation of quantitative graphical data are presented. This technique provides a very quick quantitative analysis of the material properties of an unprocessed section of bone.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151143","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
A model of knee motion in the sagittal plane 膝关节矢状面运动模型
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154680
P. F. Williams, G. Peura, A. Hoffman
{"title":"A model of knee motion in the sagittal plane","authors":"P. F. Williams, G. Peura, A. Hoffman","doi":"10.1109/NEBC.1991.154680","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154680","url":null,"abstract":"A two dimensional mathematical model of knee motion in the sagittal plane was developed. The cruciate ligaments were modeled as a crossed four bar linkage. The mathematical model uses a series of vector loops and scalar equations to solve for all linkage parameters. The model requires 11 equations to solve for 11 unknowns. The equations were driven with a linkage angle that is directly related to the flexion angle. The model was used to examine the effect of various geometric parameters on the roll and slip between the articulating surfaces of the medial condyle. A geometric computer model was developed to verify the results.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123184691","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
The actimeter: analyzing human functional mobility 活动计:分析人体功能活动能力
Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference Pub Date : 1991-04-04 DOI: 10.1109/NEBC.1991.154623
S.C. Koenig, J. Lacourse
{"title":"The actimeter: analyzing human functional mobility","authors":"S.C. Koenig, J. Lacourse","doi":"10.1109/NEBC.1991.154623","DOIUrl":"https://doi.org/10.1109/NEBC.1991.154623","url":null,"abstract":"The actimeter is a device that measures and records gross human body movements. The data obtained from the actimeter are used to compare the body position profiles of disable-bodied individuals to those of able-bodied persons for the same occupation. The analysis of preliminary data obtained from actimeter tests indicate that the system is approximately 75% accurate. Error associated with the system was due to the undergarment suit, mercury sensors, and sampling rate. The accuracy will increase with improvements to the present system. It is concluded that the actimeter system will provide vocational rehabilitation counselors with information to enhance their evaluation process.<<ETX>>","PeriodicalId":434209,"journal":{"name":"Proceedings of the 1991 IEEE Seventeenth Annual Northeast Bioengineering Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115672082","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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