Chapter

Brain: Electroencephalography and Imaging

Robert M. Stern, William J. Ray and Karen S. Quigley

in Psychophysiological Recording

Second edition

Published in print December 2000 | ISBN: 9780195113594
Published online March 2012 | e-ISBN: 9780199846962 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195113594.003.0007
Brain: Electroencephalography and Imaging

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The presence of recognizable electrical rhythms of the brain has excited the curiosity and imagination of both professionals and laypeople alike. Psychophysiologists, neurologists, and science fiction writers have been intrigued by the presence of brain activity and the possibility of having an objective noninvasive marker that reflects underlying psychological processes. Some have taken these ideas to the extreme by suggesting that these measures can tell us what someone is thinking or feeling or even if they are telling the truth. Although it is not that simple, some researchers have begun to use brain activity to help physically disabled individuals to communicate, to move paralyzed limbs, or even to reduce seizure disorders. Understanding cortical processes through various forms of brain imaging is a complex task. Scientists have come to appreciate the complicated relationship that exists between electrocortical measures and cognitive, emotional, and behavioral processes. This chapter discusses spontaneous electroencephalography, event-related potentials, electrodes and electrode placement, and brain imaging techniques such as magnetoencephalography, positron emission tomography, and magnetic resonance imaging.

Keywords: electroencephalography; brain imaging; brain; brain activity; electrodes; magnetoencephalography; positron emission tomography; magnetic resonance imaging

Chapter.  8426 words.  Illustrated.

Subjects: Psychology

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