Topographic Brain Mapping of EEG and Evoked Potentials - Hardcover

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.

This book represents a review of latest developments and future trends in topographic brain mapping in clinical neurophysiology. The merging of quantified EEG with topographic mapping and their application to clinical and research aspects of brain mapping have proved to be particularly exciting advances in the field. Contributions range from discussions of methodological, clinical, psychophysiological, psychiatric and magnetencephalographic aspects to more philosophical discourses of approach. Here, differing ways in which mapping can be used clinically are outlined. In view of these diverse approaches, it is stressed that the book does not aim to provide universal concrete guidelines, but rather to raise key issues for consideration in the future. The information represents a major step in bringing the modern advances in electrophysiology to the psychiatrists and neurologists who will profit from them.