Clinical Electroencephalography and Topographic Brain Mapping

Clinical Electroencephalography and Topographic Brain Mapping PDF

Author: Frank H. Duffy

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 314

ISBN-13: 1461388260

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Electroencephalography is truly an interdisciplinary endeavor, involving concepts and techniques from a variety of different disciplines. Included are basic physics, neuro physiology, electrophysiology, electrochemistry, electronics, and electrical engineer ing, as well as neurology. Given this interesting and diverse mixture of areas, the train ing of an EEG technician, a neurology resident, or an EEG researcher in the basics of clinical electroencephalography presents an uncommon challenge. In the realm of technology, it is relatively easy to obtain a technically adequate EEG simply by learning to follow a protocol and by correctly setting the various switches on the EEG machine at the right time. But experience has shown that the ability to obtain high-quality EEGs on a routine, day-to-day basis from a wide variety of patients requires understanding and knowledge beyond what is learned by rote. Likewise, knowledge above and beyond what is gained by simple participation in an EEG reading is necessary to correctly and comprehensively interpret the record. Such knowledge comes from an understanding of the basic principles upon which the practice of clinical EEG is founded - principles that derive from the various disciplines cited.

Topographic Brain Mapping of EEG and Evoked Potentials

Topographic Brain Mapping of EEG and Evoked Potentials PDF

Author: Konrad Maurer

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 583

ISBN-13: 3642726585

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Imaging procedures have been used for many years and are becoming increasingly important in a number of medical disciplines. This is due to recent technological advances, primarily computerization. The meth ods employed in CNS diagnostics are collectively referred to as "neu roimaging" and include procedures for investigating both cerebral morphology and cerebral function, such as computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomogra phy (PET), and single-photon emission computed tomography (SPECT). Topographic mapping of electroencephalograms (EEG) and evoked potentials represents one of the functional procedures and per mits topographic imaging of EEG, evoked potentials, and magnetic fields. The latter application includes not only magnetic fields evoked by stimuli relating to different sensory modalities, but also endogenous and motor fields resulting from spontaneous brain magnetic activity, as recorded by magnetoencephalograms (MEG), the magnetic comple ment of the EEG. The advantage of recording electric and magnetic fields over other neuroimaging procedures is that these techniques are completely noninvasive and have extremely short analysis times (in the millisecond range). The aim of this book is to clarify the current state of this emerging technology, to assess its potential for substantive contributions to brain research, to delineate areas for further research and, over all, to envis age clinical applications in disciplines such as psychiatry, neurology, and neuropsychology.

Atlas of Brain Mapping

Atlas of Brain Mapping PDF

Author: Konrad Maurer

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 164

ISBN-13: 3642760430

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From its discovery in 1929 by Hans Berger until the late 1960s, when sensory visual and auditory evoked potentials were dis covered and became popular, the EEG was the most important method of neurophysiological examination. W-ith the advent of computer technology in the 1980s, it became possible to plot the potential fields of the EEG onto models of the scalp. This plot ting of information as neuroimages followed the structural and functional techniques of Cf, MRI, PET and SPECf. The success of this method, which began in the early 1980s, has led to the brain mapping of EEGs and EPs being increasingly used for di agnosistic purposes in neurology, psychiatry and psychopharma cology. The pioneers of this method believed in it and were commit ted to its success. However, many traditionalists felt that it gave no new information and so regarded the method with scepticism. Some found both the coloured maps and the mapping technique misleading, which led to unnecessary conflict between mappers and their chromophobic oponents. Emotions have run so high that some professional bodies have justifiably adopted guidelines and warned of the misuse of the method.

Introduction to Brain Topography

Introduction to Brain Topography PDF

Author: Peter K.H. Wong

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 292

ISBN-13: 1461537169

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It had been difficult to find appropriate teaching material for students and newcomers to this field of brain electromagnetic topography. In part, this is due to the many disciplines involved, requiring some knowledge of the physical sciences, mathematics, neurophysiology and anatomy. It is my hope that this book will be found suitable for introducing interested workers to this exciting field. Advanced topics will not be covered, as there are many excellent texts available. Peter K.H. Wong vii ACKNOWLEDGEMENT My co-authors, Hal Weinberg and Roberto Bencivenga, for their support; Richard Hamer, for all his early advice; Ernst Rodin and Gene Ramsay, for their encouragement; Wendy Cummings for her assistance; Technologists from the Department of Diagnostic Neurophysiology for collecting such excellent data; Bio-Logic Systems Corp. for permission to use some data as illustration; and all my friends and colleagues. My wife Elke, for putting up with me throughout this presumptuous endeavour. The manuscript was delivered in camera-ready form to the Publisher. Illustrations were created using Harvard Graphics and CorelDraw software. ix CONTENTS Part 1: Fundamentals. 1 1.1 Introduction . . . 1 1.2 Data Aquisition. . 3 Map Construction. 8 Interpolation . . . 12 1.3 Spatial Sampling . . 16 1.4 Reference and Reference-Dependence 20 1.5 Map Display Methods ..... . 27 Scaling and Floating Voltage Scales. 37 Summary Maps .......... . 37 1.6 Identification of Topographic Features 41 1.7 Spike Mapping .. . 51 1.8 Post-Processing 61 Analog Front-end. 62 Digital Filtering . 63 Reference Manipulation .. 65 Statistical Mapping .

Topographic Mapping of Brain Electrical Activity

Topographic Mapping of Brain Electrical Activity PDF

Author: Frank H. Duffy

Publisher: Butterworth-Heinemann

Published: 2013-10-22

Total Pages: 467

ISBN-13: 1483192571

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Topographic Mapping of Brain Electrical Activity presents the state of topographic mapping. It discusses its contributions to brain research. It addresses its research and clinical applications. It also explains completely the brain electrical activity mapping as a tool used in the diagnosis and treatment of neurological dysfunction Some of the topics covered in the book are the color imaging of scalp somatosensory evoked potential fields; visual evoked potential topography; spatial analysis of EEG and evoked potential data; intra-individual changes in EEG during mental performance; and changes in transversal coherence. The event-related desynchronization mapping of visualization of cortical activation patterns is fully covered. The spatiotemporal mapping display is discussed in detail. The text describes in depth the physical aspects of EEG data as a basis for topographic mapping. The human scalp field injection experiments are presented completely. A chapter is devoted to the classification strategies for topographic mapping data. Another section focuses on the topological factors. The book can provide useful information to radiologists, neurologists, students, and researchers.

Electrical Neuroimaging

Electrical Neuroimaging PDF

Author: Christoph M. Michel

Publisher: Cambridge University Press

Published: 2009-07-23

Total Pages: 249

ISBN-13: 0521879795

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An authoritative reference giving a systematic overview of new electrical imaging methods. Provides a comprehensive and sound introduction to the basics of multichannel recording of EEG and event-related potential (ERP) data, as well as spatio-temporal analysis of the potential fields. Chapters include practical examples of illustrative studies and approaches.

Electrical Neuroimaging

Electrical Neuroimaging PDF

Author: Christoph M. Michel

Publisher: Cambridge University Press

Published: 2009-07-23

Total Pages: 249

ISBN-13: 1139480901

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Electrical neuroimaging is based on the analysis of brain electrical activity recorded from the human scalp with multichannel EEG. It offers enormous potential for the dynamic mapping of brain functions, and for the non-invasive diagnosis of neurological and psychiatric conditions. This authoritative reference gives a systematic overview of new electrical imaging methods, with a sound introduction to the basics of multichannel recording of EEG and event-related potential (ERP) data, as well as spatio-temporal analysis of the potential fields. The book enables researchers to measure valid data, select and apply appropriate analysis strategies, and avoid the most common mistakes when analyzing and interpreting EEG/ERP data. Importantly, it informs the research communities of the possibilities opened by these space-domain oriented approaches to the analysis of brain electrical activity, and of their potential to offer even more powerful diagnostic techniques when integrated with other clinically relevant data.

Recent Advances in Human Brain Mapping

Recent Advances in Human Brain Mapping PDF

Author: International Society for Brain Electromagnetic Topography. World Congress

Publisher:

Published: 2002

Total Pages: 964

ISBN-13:

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These proceedings cover a wide range of topics in the field of brain function mapping; from basic neuroscience to clinical applications. It provides an important overview of brain mapping research and will be useful reading for the neuroscientist who intends to clarify the brain function using physiological or imaging techniques. Techniques used include EEG, ERP, PET, SPECT, MEG, MRI, MRS, fMRI and optic topography.

Niedermeyer's Electroencephalography

Niedermeyer's Electroencephalography PDF

Author: Donald L. Schomer

Publisher: Lippincott Williams & Wilkins

Published: 2012-10-18

Total Pages: 1308

ISBN-13: 1451153155

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The leading reference on electroencephalography since 1982, Niedermeyer's Electroencephalography is now in its thoroughly updated Sixth Edition. An international group of experts provides comprehensive coverage of the neurophysiologic and technical aspects of EEG, evoked potentials, and magnetoencephalography, as well as the clinical applications of these studies in neonates, infants, children, adults, and older adults. This edition's new lead editor, Donald Schomer, MD, has updated the technical information and added a major new chapter on artifacts. Other highlights include complete coverage of EEG in the intensive care unit and new chapters on integrating other recording devices with EEG; transcranial electrical and magnetic stimulation; EEG/TMS in evaluation of cognitive and mood disorders; and sleep in premature infants, children and adolescents, and the elderly. A companion website includes fully searchable text and image bank.

Clinical Brain Mapping

Clinical Brain Mapping PDF

Author: Daniel Yoshor

Publisher: McGraw Hill Professional

Published: 2012-05-18

Total Pages: 301

ISBN-13: 0071805966

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The most accessible, clinically focused guide to brain mapping techniques and systems This profusely illustrated, concise, yet detailed sourcebook enables both neurosurgeons and neurologists to map functions to specific cognitive and sensory locations in the brain. Clinical Brain Mapping takes you step by step through the methods and functional bases of the techniques, focusing on all clinical situations that require cerebral localization for diagnosis and therapeutic management. Clinical Brain Mapping is cohesively organized into two sections: Techniques and Systems. The first section covers the full scope of methods for determining cerebral location, from the classic Wada test to the newest fMRI and magnetoencephalography procedures. In the Systems section, expert contributors offer key insights into the systems that are mapped with a multi-modality approach, covering somatomotor and somatosensory function, language, vision, hearing, and memory. The book concludes with informative chapters on specific applications of mapping techniques. FEATURES 350 radiologic images and EEG tracings show each brain mapping technique, adding depth and clarity to chapter material Multi-modal approach focuses on a wide array of clinical concerns and corresponding methods, including: Operative anatomy and structural neuroimaging; Functional MRI and magnetoencephalography; Optical imaging; Neuropsychological testing and the Wada test; Extraoperative brain mapping; Electrocorticographic spectral analysis