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Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)最新文献

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Public perceptions of safety standards for human exposure to electromagnetic fields 公众对人体暴露于电磁场的安全标准的认识
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666458
I. Beale, N. Thoms
{"title":"Public perceptions of safety standards for human exposure to electromagnetic fields","authors":"I. Beale, N. Thoms","doi":"10.1109/ICBEM.1998.666458","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666458","url":null,"abstract":"There is continuing controversy about possible health risk to the public from exposure to electromagnetic fields associated with power reticulation, telecommunications and broadcasting. In this study the attitudes and expressed preferences of 510 engineering and psychology students were studied in the context of a model of 'acceptable risk' which regards the concept of risk as being socially constructed and understandable only by the study of the social and psychological factors that modulate individuals' judgments about risk. Their judgments were systematic rather than irrational and were significantly influenced by variables such as were, gender, personal risk, academic 'culture', and economic cost scenarios.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124401432","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
Measurement of haemodynamic parameters during dobutamine echocardiography by automated impedance cardiography 多巴酚丁胺超声心动图血流动力学参数的自动阻抗心动图测量
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666431
A. Scherhag, S. Pfleger, J. Šťastný, W. Voelker, D. Heene
{"title":"Measurement of haemodynamic parameters during dobutamine echocardiography by automated impedance cardiography","authors":"A. Scherhag, S. Pfleger, J. Šťastný, W. Voelker, D. Heene","doi":"10.1109/ICBEM.1998.666431","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666431","url":null,"abstract":"Dobutamine stress echocardiography (DSE) has become a widely used method for the evaluation of patients (PTS) with suspected coronary artery disease (CAD). However, little is known about the haemodynamic effects of such short-term, high-dose dobutamine infusions. The authors investigated 50 PTS who were referred for DSE. Heart rate (HR), stroke volume (SV), cardiac output (CO) and index of contractility (IC) measured by automated impedance cardiography. Baseline values were compared to the corresponding values at peak stress with dobutamine. All PTS underwent coronary angiography within the next 1-7 days. For interpretation of the data, PTS were subdivided into 3 groups: PTS without CAD (A), PTS with single vessel disease (B) and PTS with multivessel disease (C). At baseline, there was no significant difference between the three groups. The infusion of dobutamine resulted to an significant increase of HTI SV, CO and IC in all PTS. At peak stress, there was no significant difference between PTS of group A and B, but PTS of group C showed a significantly smaller increase of SV, CO and IC (p < 0.05). It is concluded that automated impedance cardiography allows continuous haemodynamic monitoring during DSE. In PTS with multivessel disease, the impaired systolic performance of the left ventricle during pharmacological stress could be clearly demonstrated.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114478703","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
Macro-neocortical dynamics, cognition, and EEG 宏观新皮质动力学，认知和脑电图
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666387
P. Nunez
{"title":"Macro-neocortical dynamics, cognition, and EEG","authors":"P. Nunez","doi":"10.1109/ICBEM.1998.666387","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666387","url":null,"abstract":"A conceptual framework for neocortical dynamic behavior is proposed to embrace brain theories applied to different experimental designs, spatial scales, and brain states. Neocortical dynamics and correlated behavioral/cognitive brain states are viewed as distinct, but interacting local (regionally specific) processes and globally coherent dynamics. Global processes can facilitate synchronous activity in remote cell groups (top down) which function simultaneously at several different spatial scales. At the same time, local processes may help drive (bottom up) macroscopic global dynamics observed with EEG (or MEG).","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129579603","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
Bioelectromagnetic research and statistical power 生物电磁研究和统计能力
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666460
J. Podd, Wyatt Page, Bruce R. Rapley, I. Beale
{"title":"Bioelectromagnetic research and statistical power","authors":"J. Podd, Wyatt Page, Bruce R. Rapley, I. Beale","doi":"10.1109/ICBEM.1998.666460","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666460","url":null,"abstract":"Bioelectromagnetic field research has some way to go before the scientific community at large is convinced that weak, extremely low frequency electromagnetic fields affect biological systems. This paper argues that researchers are doing themselves and the discipline an injustice by running studies where statistical power is very low. The most frequent outcome of low statistical power is a null result, even when there are experimental effects to be detected. It is suggested that future research must address the issue of statistical power, both through increasing it in individual studies and through conducting meta-analytic investigations of existing research.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128884726","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
New instrument to measure oxygen saturation and total hemoglobin volume in local skin by near-infrared spectroscopy 近红外光谱法测量局部皮肤氧饱和度和总血红蛋白体积的新仪器
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666391
Y. Nagashima, N. Komeda, Y. Yada, A. Sakai, H. Nose
{"title":"New instrument to measure oxygen saturation and total hemoglobin volume in local skin by near-infrared spectroscopy","authors":"Y. Nagashima, N. Komeda, Y. Yada, A. Sakai, H. Nose","doi":"10.1109/ICBEM.1998.666391","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666391","url":null,"abstract":"Most conventional instruments to measure oxygen saturation and total hemoglobin volume were solely based on analysis of relative changes in oxygenated hemoglobin, deoxygenated hemoglobin and their total. To test the validity of the data obtained with this instrument, the authors analyzed the relationship of oxygen saturation in blood flowing through small vessels in skin (StO/sub 2/) to arterial blood oxygen saturation (SaO/sub 2/), oxygen saturation in venous blood (SvO/sub 2/) in the hypobaric chamber. The analyses revealed that StO/sub 2/ has a significant positive correlation with SaO/sub 2/ (r=0.846, P<0.001) and SvO/sub 2/ (r=0.983, P<0.001). These results suggest that StO/sub 2/ measured with this instrument reflects oxygen saturation in blood flowing through small vessels of skin.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"48 47","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132388752","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
Physiological significance of the meridian system 经络系统的生理意义
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666452
Kuo-Gen Chen
{"title":"Physiological significance of the meridian system","authors":"Kuo-Gen Chen","doi":"10.1109/ICBEM.1998.666452","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666452","url":null,"abstract":"The meridian system exhibits special electrical properties (current conduction, wave propagation and preferential direction) and is the fundamental network for communicating biological matter, energy and information. It is particularly important to the embryo during early stages of development. The meridian system integrates the cells prior to the appearance of developed systems such as the circulation and nervous systems. Because the meridian system keeps its primitive properties and is not a pipe-like structure, it is the most \"tunable\" network in a living organism and can be used in diagnosis and treatment in traditional Chinese medicine and the electrodermal screening test.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123241289","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
Development of a new in vitro RF exposure device for confocal microscopy imaging during concurrent 900 MHz RF exposure 开发一种新的体外射频暴露装置，用于共聚焦显微镜在900 MHz射频暴露期间的成像
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666405
V. Anderson, A. Wood, K. Joyner
{"title":"Development of a new in vitro RF exposure device for confocal microscopy imaging during concurrent 900 MHz RF exposure","authors":"V. Anderson, A. Wood, K. Joyner","doi":"10.1109/ICBEM.1998.666405","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666405","url":null,"abstract":"A radiofrequency (RF) exposure device has been developed to allow accurate quantifiable RF field exposures of biological cells while being imaged by a confocal or general fluorescence microscope. The device consists of a cell medium chamber at the end of a modified coaxial transmission line. It provides a sterile, perfusable, temperature controlled environment for optimal cell maintenance conditions. The device is far more energy efficient than exposure of cell cultures in TEM cells, allowing high SAR doses. Furthermore, the device is small enough to fit on any inverted microscope stage and can be used with standard microscope objectives. The optical imaging quality of cells in the device is not degraded relative to normal coverslip viewing conditions.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121826791","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
Consideration of EDLC as emergency power source for totally implantable medical device EDLC作为全植入式医疗器械应急电源的考虑
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666390
H. Watanabe, N. Jinguji, H. Matsuki, N. Hoshimiya, S. Nitta
{"title":"Consideration of EDLC as emergency power source for totally implantable medical device","authors":"H. Watanabe, N. Jinguji, H. Matsuki, N. Hoshimiya, S. Nitta","doi":"10.1109/ICBEM.1998.666390","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666390","url":null,"abstract":"The authors propose to use an Electric Double Layer Capacitor (EDLC) as an emergency power source for totally implantable medical devices. So far chemical batteries, such as Ni-MH and Li-ion batteries, have been considered as power sources. EDLC needs no control circuit to protect against excess charge and discharge. Furthermore, EDLC can be cycled many times. In these points EDLC is superior to batteries.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126980833","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
Quantitative multivariate analysis with artificial neural networks 人工神经网络的定量多变量分析
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666394
Chii-Wann Lin, T. Hsiao, Mang-Ting Zeng, Hue-Hua Chiang
{"title":"Quantitative multivariate analysis with artificial neural networks","authors":"Chii-Wann Lin, T. Hsiao, Mang-Ting Zeng, Hue-Hua Chiang","doi":"10.1109/ICBEM.1998.666394","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666394","url":null,"abstract":"Quantitative interpretation of spectra can be achieved by using artificial neural networks with multi-layer architecture. Both back-propagation (BP) and radial basis function (RBF) are implemented and tested with raw absorption spectra and normalized spectra of glucose solutions in MATLAB. Simulation results showed that the partial least square (PLS) method can have a better performance with small number in the calibration set. However, with increasing size of data set, as in the cross validation method, RBF and BP have better performance. With optimal spreading factor, RBF can have the same degree of accuracy but significantly faster convergent speed comparing to BP. The normalization scheme can also significantly affect the performance of both RBF and BP.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"920 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126993329","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
Effect of the skull on scalp potentials 颅骨对头皮电位的影响
Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269) Pub Date : 1998-02-15 DOI: 10.1109/ICBEM.1998.666368
H. Eskola, T. Toivo, P. Laarne, A. Lahtinen, A.-P. Meretoja, H. Lang, J. Malmivuo
{"title":"Effect of the skull on scalp potentials","authors":"H. Eskola, T. Toivo, P. Laarne, A. Lahtinen, A.-P. Meretoja, H. Lang, J. Malmivuo","doi":"10.1109/ICBEM.1998.666368","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666368","url":null,"abstract":"The skull has low conductivity, which influences especially electroencephalographic (EEG) signals recorded on the scalp, but also the magneto-encephalogram (MEG). Thus the information obtained from these signals can be prominently enhanced, if the effects of the skull can be taken into account. We have used both theoretical and experimental approaches to study these effects on EEG. Our experimental results suggest that the signal transmission from the cortex to the scalp has quite low frequency dependence. The results of theoretical modelling suggest that the overall variation of the skull parameters has a relatively small effect compared to the spatial variations.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"23 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134341148","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
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