Clinical Applications of Magnetoencephalography
This book presents an overview of the recent advances in clinical applications of magnetoencephalography (MEG). With the expansion of MEG to neuroscience, its clinical applications have also been actively pursued. Featuring contributions from prominent ex
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Shozo Tobimatsu Ryusuke Kakigi Editors
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Clinical Applications of Magnetoencephalography
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Shozo Tobimatsu • Ryusuke Kakigi Editors
Clinical Applications of Magnetoencephalography
Editors Shozo Tobimatsu Graduate School of Medical Sciences Department of Clinical Neurophysiology Fukuoka, Japan
Ryusuke Kakigi National Institute for Physiological Sciences Department of Integrative Physiology Okazaki, Japan
ISBN 978-4-431-55728-9 ISBN 978-4-431-55729-6 DOI 10.1007/978-4-431-55729-6
(eBook)
Library of Congress Control Number: 2016931298 Springer Tokyo Heidelberg New York Dordrecht London # Springer Japan 2016 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper Springer Japan KK is part of Springer Science+Business Media (www.springer.com)
Preface
In 1968, David Cohen (Science 161:784–786) showed for the first time that it is possible to record magnetic fields from the head, so-called magnetoencephalography (MEG). The extremely weak magnetic fields that are measured are generated by the current flow in the human brain due to electrical processes in the neurons. After the first report on magnetic brain signals, the development of superconducting quantum interference detectors (SQUID) made it possible to make reliable recordings of these weak magnetic fields with appropriate sensitivity. Since the introduction of highdensity whole-scalp coverage of MEG in the 1990s, the instrumentation has not changed drastically, yet novel data analyses are advancing the field rapidly by shifting the focus from merely pointing to hotspot activity to seeking stimulus- or task-specific information and to characterizing the dynamics of functional networks. Why did the interest in MEG increase over the last decade in the neuroscience community? There are certainly two major aspects of MEG that make it very suitable for brain imaging: (1) MEG has a high temporal resolution; and (2) the different constituents of the head-like fluid or bone d
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