Pub Date : 1998-02-15DOI: 10.1109/ICBEM.1998.666372
Z. Xu, E. Butler, M. Horne
A neural-fuzzy network was applied to detect changes in neuronal discharge patterns. The network was firstly trained by a set of input-output data to simulate the classification processing of neuronal discharge patterns assessed by experienced researchers. A second set of data was then used to test the network. Both train and test data were recorded from the cerebellar thalamus of a conscious monkey performing voluntary wrist movements. The preliminary result illustrates that the neural-fuzzy network has potential advantages in classification of neuronal discharge patterns.
{"title":"A study of a neural-fuzzy network method for recognising change in neuronal discharge patterns","authors":"Z. Xu, E. Butler, M. Horne","doi":"10.1109/ICBEM.1998.666372","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666372","url":null,"abstract":"A neural-fuzzy network was applied to detect changes in neuronal discharge patterns. The network was firstly trained by a set of input-output data to simulate the classification processing of neuronal discharge patterns assessed by experienced researchers. A second set of data was then used to test the network. Both train and test data were recorded from the cerebellar thalamus of a conscious monkey performing voluntary wrist movements. The preliminary result illustrates that the neural-fuzzy network has potential advantages in classification of neuronal discharge patterns.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"40 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":"116367100","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666454
H. Nazeran, K. Behbehani, F. Yen, P. Ray
Presently there is lack of a reliable method for monitoring the respiratory cycles in the ambulatory patients. Knowledge of respiratory pattern is useful in many clinical situations. With the ECG signal being the most frequently monitored biomedical signal, it is essential to extract the respiratory waveform from ordinary ECG tracings. Such a technique permit reliable detection of respiratory efforts in healthy and diseased patients. Here, the authors present the result of a pilot study in which the ECG signals from lead II (LL+:RA-) and a modified chest lead I(V1+:LA-) were used to derive the respiration waveforms from the mean electrical axis of the heart. The ECG derived respiratory patterns compared favorably with those obtained from airflow measurements.
{"title":"Reconstruction of respiratory patterns from electrocardiographic signals","authors":"H. Nazeran, K. Behbehani, F. Yen, P. Ray","doi":"10.1109/ICBEM.1998.666454","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666454","url":null,"abstract":"Presently there is lack of a reliable method for monitoring the respiratory cycles in the ambulatory patients. Knowledge of respiratory pattern is useful in many clinical situations. With the ECG signal being the most frequently monitored biomedical signal, it is essential to extract the respiratory waveform from ordinary ECG tracings. Such a technique permit reliable detection of respiratory efforts in healthy and diseased patients. Here, the authors present the result of a pilot study in which the ECG signals from lead II (LL+:RA-) and a modified chest lead I(V1+:LA-) were used to derive the respiration waveforms from the mean electrical axis of the heart. The ECG derived respiratory patterns compared favorably with those obtained from airflow measurements.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"31 2 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":"123653528","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666429
A. Kandori, K. Tsukada, H. Horigome, M. Asaka, S. Shigemitsu, M. Takahashi, Y. Terada, T. Kubo, Akira Matsui, T. Mitsui
A nine-channel SQUID magnetometer system is developed to detect weak magnetic fields generated by fetal cardiac activity. The nine 20-mm-diameter axial first-order gradiometers are mounted at intervals of 30 mm. A baseline length of 60 mm is applied to the pickup coil to measure the weak magnetic field from a fetal heart in a deep position. The SQUID is operated with a flux-locked loop (FLL) circuit and the FLL output is recorded at 1 kHz by a computer. Fetal magneto-cardiograms (FMCG) were measured for 109 fetuses of 20 to 39 weeks' gestation. In most cases, maternal MCG interference was negligible. R-wave peaks were detected in 81% of all subjects. The results of FMCG measurements and Fourier analysis of fetal the R-R interval are shown in this paper.
{"title":"Multichannel SQUID system for detecting fetal magnetocardiograms","authors":"A. Kandori, K. Tsukada, H. Horigome, M. Asaka, S. Shigemitsu, M. Takahashi, Y. Terada, T. Kubo, Akira Matsui, T. Mitsui","doi":"10.1109/ICBEM.1998.666429","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666429","url":null,"abstract":"A nine-channel SQUID magnetometer system is developed to detect weak magnetic fields generated by fetal cardiac activity. The nine 20-mm-diameter axial first-order gradiometers are mounted at intervals of 30 mm. A baseline length of 60 mm is applied to the pickup coil to measure the weak magnetic field from a fetal heart in a deep position. The SQUID is operated with a flux-locked loop (FLL) circuit and the FLL output is recorded at 1 kHz by a computer. Fetal magneto-cardiograms (FMCG) were measured for 109 fetuses of 20 to 39 weeks' gestation. In most cases, maternal MCG interference was negligible. R-wave peaks were detected in 81% of all subjects. The results of FMCG measurements and Fourier analysis of fetal the R-R interval are shown in this paper.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"40 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":"122870866","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666444
T. Dovan, R. Owen
The interference by ambient 50 Hz magnetic fields on computer monitors or VDUs is an issue which has become prominent in recent times due to the widespread use of personal computers. Various options exist to resolve the interference problem by dealing either with the VDU or with the magnetic field sources including the selection of suitable locations or types of monitor, shielding or modification of equipment. For new installations, appropriate design and installation practices adopted at the outset can reduce or eliminate subsequent costly modifications.
{"title":"Power frequency magnetic fields and computer VDU interference phenomena","authors":"T. Dovan, R. Owen","doi":"10.1109/ICBEM.1998.666444","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666444","url":null,"abstract":"The interference by ambient 50 Hz magnetic fields on computer monitors or VDUs is an issue which has become prominent in recent times due to the widespread use of personal computers. Various options exist to resolve the interference problem by dealing either with the VDU or with the magnetic field sources including the selection of suitable locations or types of monitor, shielding or modification of equipment. For new installations, appropriate design and installation practices adopted at the outset can reduce or eliminate subsequent costly modifications.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"10 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":"128408923","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666401
S. Ollmar, I. Nicander
Depending on the frequency range, electrical bio-impedance (EBI) spectra of skin reflect the hydration of the stratum corneum, experimental irritative and allergic reactions, skin barrier properties, and alterations due to some diseases. For oral mucosa, the degree of keratinization is an important factor. Baseline values differ while reactions are reflected in a manner similar to skin. Patterns of indices can discriminate between different types of irritative reactions, possibly discriminate irritative reactions from allergic ones as well as differentiating some diseases. The sensitivity is high, and quantification of alterations below the visual threshold are possible non-invasively.
{"title":"Diagnostic potential of electrical bio-impedance for skin and oral mucosa","authors":"S. Ollmar, I. Nicander","doi":"10.1109/ICBEM.1998.666401","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666401","url":null,"abstract":"Depending on the frequency range, electrical bio-impedance (EBI) spectra of skin reflect the hydration of the stratum corneum, experimental irritative and allergic reactions, skin barrier properties, and alterations due to some diseases. For oral mucosa, the degree of keratinization is an important factor. Baseline values differ while reactions are reflected in a manner similar to skin. Patterns of indices can discriminate between different types of irritative reactions, possibly discriminate irritative reactions from allergic ones as well as differentiating some diseases. The sensitivity is high, and quantification of alterations below the visual threshold are possible non-invasively.","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":"125924741","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666365
J. Malmivuo
The discipline of bioelectromagnetism is 6000 years old. Bioelectric methods have developed to very important diagnostic and therapeutic methods in the modern medicine. Large investments are made to develop also the biomagnetic applications for medical use. Their future is, however, still unclear.
{"title":"History, present status and future of bioelectromagnetism","authors":"J. Malmivuo","doi":"10.1109/ICBEM.1998.666365","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666365","url":null,"abstract":"The discipline of bioelectromagnetism is 6000 years old. Bioelectric methods have developed to very important diagnostic and therapeutic methods in the modern medicine. Large investments are made to develop also the biomagnetic applications for medical use. Their future is, however, still unclear.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"2 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":"126903415","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666386
D. Stroud
Measurements of bioimpedance are often used to determine water spaces in humans and this leads to the perception that it measures the sum of extra- plus intracellular water at high frequencies. Using a simple mathematical model it is shown that the intra-cellular water makes only a small contribution to the quantity that it actually measures.
{"title":"What does bioimpedance measure?","authors":"D. Stroud","doi":"10.1109/ICBEM.1998.666386","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666386","url":null,"abstract":"Measurements of bioimpedance are often used to determine water spaces in humans and this leads to the perception that it measures the sum of extra- plus intracellular water at high frequencies. Using a simple mathematical model it is shown that the intra-cellular water makes only a small contribution to the quantity that it actually measures.","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":"130399210","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666439
M. Cohent, A. Wohlers
The authors examined the correlation between solar activity (sunspot numbers) and 96050 psychiatric admissions between July 1984 and December 1993, Victoria, Australia. Calculation of the Pearson correlation coefficient gave a value of 0.399 (P value; 0.0001). This value however, may be an artefact of autocorrelations within the two series rather than a relationship between them as the Pearson correlation does not account for the serial nature of the data. To overcome this problem the authors calculated the prewhitened cross-correlation between the series and tested whether they were uncorrelated. The test was significant (P value; 0.006), which gives strong evidence for a relationship between sunspot number and psychiatric admissions.
{"title":"Is there a relationship between sunspot numbers and psychiatric admissions?","authors":"M. Cohent, A. Wohlers","doi":"10.1109/ICBEM.1998.666439","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666439","url":null,"abstract":"The authors examined the correlation between solar activity (sunspot numbers) and 96050 psychiatric admissions between July 1984 and December 1993, Victoria, Australia. Calculation of the Pearson correlation coefficient gave a value of 0.399 (P value; 0.0001). This value however, may be an artefact of autocorrelations within the two series rather than a relationship between them as the Pearson correlation does not account for the serial nature of the data. To overcome this problem the authors calculated the prewhitened cross-correlation between the series and tested whether they were uncorrelated. The test was significant (P value; 0.006), which gives strong evidence for a relationship between sunspot number and psychiatric admissions.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"44 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":"123498737","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666433
F. Kocijan
Our planet is enveloped by an electric field, which is always present, but varies in magnitude. Even though this has been known for several decades, very little attention is being given to this phenomenon. This global electric field is still not fully understood and provides more questions than answers. Local factors like topology, vegetation and atmospheric parameters shape this field at the surface to such an extent, that virtually no two places have identical local geoelectric fields. This paper discusses some aspects of this field and presents data obtained and studied over several years by the author.
{"title":"The natural geoelectric field","authors":"F. Kocijan","doi":"10.1109/ICBEM.1998.666433","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666433","url":null,"abstract":"Our planet is enveloped by an electric field, which is always present, but varies in magnitude. Even though this has been known for several decades, very little attention is being given to this phenomenon. This global electric field is still not fully understood and provides more questions than answers. Local factors like topology, vegetation and atmospheric parameters shape this field at the surface to such an extent, that virtually no two places have identical local geoelectric fields. This paper discusses some aspects of this field and presents data obtained and studied over several years by the author.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"13 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":"127326434","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 : 1998-02-15DOI: 10.1109/ICBEM.1998.666438
V. Soultanov, Jill Charalambous, E. White, D. Sapunar
Medicine has long been challenged to detect disease before it can do irreversible damage, usually by means of invasive tests after the presentation of symptoms. This paper introduces a unique diagnostic tool, the Instant Kirlian Diagnostic System (IKiDS) which derives from the work of the Kirlians of Russia in 1939. It delineates both the disease process and its energetic precursors in the human energy field, allowing for treatment and lifestyle changes before real damage occurs. IKiDS utilises a sensor, high voltage electronics and computer software to "capture" an energy discharge from the fingertips which contains valuable diagnostic information. The research summary is based on analysis of over 1000 sets of prints. Whilst some diagnostic puzzles remain, it is clear that IKiDS has impressive diagnostic and evaluative capabilities. Furthermore, it is accurate, user friendly and offers a complete picture of the physical, mental and emotional condition in "real time". Future research directions are indicated.
{"title":"Instant Kirlian diagnostic system (IKiDs). A unique form of diagnosis","authors":"V. Soultanov, Jill Charalambous, E. White, D. Sapunar","doi":"10.1109/ICBEM.1998.666438","DOIUrl":"https://doi.org/10.1109/ICBEM.1998.666438","url":null,"abstract":"Medicine has long been challenged to detect disease before it can do irreversible damage, usually by means of invasive tests after the presentation of symptoms. This paper introduces a unique diagnostic tool, the Instant Kirlian Diagnostic System (IKiDS) which derives from the work of the Kirlians of Russia in 1939. It delineates both the disease process and its energetic precursors in the human energy field, allowing for treatment and lifestyle changes before real damage occurs. IKiDS utilises a sensor, high voltage electronics and computer software to \"capture\" an energy discharge from the fingertips which contains valuable diagnostic information. The research summary is based on analysis of over 1000 sets of prints. Whilst some diagnostic puzzles remain, it is clear that IKiDS has impressive diagnostic and evaluative capabilities. Furthermore, it is accurate, user friendly and offers a complete picture of the physical, mental and emotional condition in \"real time\". Future research directions are indicated.","PeriodicalId":213764,"journal":{"name":"Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269)","volume":"435 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":"121102191","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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