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  1. No Access

    Chapter and Conference Paper

    Evaluation on Envelope Waveforms of Velocity in Common Carotid Artery: Age-, Gender- and Regular Exercise-Related Effect

    The present study was aimed to examine the availability of the envelope waveforms of blood velocity and its indices in common carotid artery (CCA) as the parameter influenced by gender difference, aging and re...

    A. Azhim, A. Ueno, M. Tanaka… in World Congress on Medical Physics and Biom… (2010)

  2. No Access

    Chapter and Conference Paper

    EEG Evaluation Method Using Nonlinear Modeling

    An evaluation method for EEG (electroencephalogram) is described in this paper. The proposed method uses a kind of non-linear autoregressive model by use of MLP (multilayered perceptron). The MLPs are trained ...

    M. Akutagawa, T. Murata, T. Emoto, Y. Kaji… in World Congress on Medical Physics and Biom… (2010)

  3. No Access

    Chapter and Conference Paper

    Measurement of Heart Functionality and Aging with Body Surface Electrocardiograph

    A body surface electrocardiograph employs 124 spot electrodes positioned wider area around human hart to detect heart potential generated by the hart beat in sync, collect and configure plural position potenti...

    Y. Toyosu, S. Inui, M. Akutagawa, H. Toyosu… in 13th International Conference on Biomedica… (2009)

  4. No Access

    Chapter and Conference Paper

    The possibility of the classification about Ht values using the AR model

    There are various blood purifications. Plasma Exchange(PE) is one of them. It is very important for medical workers to classify the changing Hematocrit(Ht) values during PE. Ht values have been obtained by CLI...

    Y. Nitta, M. Akutagawa, T. Emoto, T. Okahisa… in World Congress on Medical Physics and Biom… (2009)

  5. No Access

    Chapter and Conference Paper

    Development and Measurement of High-precision Surface Body Electrocardiograph

    In the 12-lead electrocardiograph currently being used general medical practice, electrodes are positioned at 6 locations in the chest region and the cardiac potential is measured. This research increases the ...

    S. Inui, Y. Toyosu, M. Akutagawa, H. Toyosu… in 13th International Conference on Biomedica… (2009)

  6. No Access

    Chapter and Conference Paper

    Investigation of a Classification about Time Series Signal Using SOM

    There are various blood purifications. Plasma Exchange(PE) is one of the blood purifications. A patient’s circulating blood volume is changing during the PE. Hence, the medical workers must treat to stabilize ...

    Y. Nitta, M. Akutagawa, T. Emoto, T. Okahisa… in 13th International Conference on Biomedica… (2009)

  7. No Access

    Chapter and Conference Paper

    Characteristic of AEP and SEP for Localization of Evoked Potential by Recalling

    After it keeps hearing a periodic auditory stimulus, it might be able to be recalled like actual sound even if there is no stimulus. To clarify brain activity at this time, EEG source localization was performed.

    K. Mukai, Y. Kaji, F. Shichijou… in 13th International Conference on Biomedica… (2009)

  8. No Access

    Chapter and Conference Paper

    Possibility of predicting Ht values during a plasma exchange therapy using back propagation neural network

    There is a sickness that is called Guillain-Barre Syndrome(GBS). The GBS has a disorder of peripheral nerve and the muscle is paralyzed. There is a plasma exchange therapy in one of the effective therapy metho...

    Y. Nitta, M. Akutagawa, H. Miyamoto… in World Congress on Medical Physics and Biom… (2007)

  9. No Access

    Chapter and Conference Paper

    EEG Analysis Using Neural Networks to Detect Changes of Brain Conditions during Operations

    In some cases, temporary or permanent occlusion of the arteries that participate in providing cerebral blood flow is needed during surgery. It is important to monitor the brain condition to prevent from a sequ...

    Yoshio Kaji, M. Akutagawa, F. Shichijo… in World Congress on Medical Physics and Biom… (2007)

  10. No Access

    Chapter and Conference Paper

    Neural networks for the novel diagnosis method based on clinical snoring sound analysis in apnea

    Obstructive Sleep Apnea (OSA) is the most common type of sleep apnea. OSA is caused by an obstruction in the upper airway, which actually stops the air flow in the nose and mouth during sleep. The current gold...

    T. Emoto, U. R. Abeyratne, M. Akutagawa… in World Congress on Medical Physics and Biom… (2007)

  11. No Access

    Article

    Tracking the states of a nonlinear and nonstationary system in the weight-space of artificial neural networks

    We propose a novel interpretation and usage of Neural Network (NN) in modeling physiological signals, which are allowed to be nonlinear and/or nonstationary. The method consists of training a NN for the k-step pr...

    T. Emoto, M. Akutagawa, U. R. Abeyratne… in Medical and Biological Engineering and Com… (2006)