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Journal of Cognitive Neuroscience

Bradley R. Postle, Editor
Spring 1989, Vol. 1, No. 2, Pages 153-170
(doi: 10.1162/jocn.1989.1.2.153)
© 1989 by the Massachusetts Institute of Technology
Positron Emission Tomographic Studies of the Processing of Singe Words
Article PDF (4.49 MB)
Steven E. Petersen
Washington University School of Medicine, Departments of Neurology, Neurological Surgery and Radiation Sciences, McDonnell Center for Studies of Higher Brain Function, Mallinckrodt Institute of Radiology, Washington University Department of Psychology
Peter T. Fox
Washington University School of Medicine, Departments of Neurology, Neurological Surgery and Radiation Sciences, McDonnell Center for Studies of Higher Brain Function, Mallinckrodt Institute of Radiology, Washington University Department of Psycholog
Michael I. Posner
Washington University School of Medicine, Departments of Neurology, Neurological Surgery and Radiation Sciences, McDonnell Center for Studies of Higher Brain Function, Mallinckrodt Institute of Radiology, Washington University Department of Psycholog
Mark Mintun
Washington University School of Medicine, Departments of Neurology, Neurological Surgery and Radiation Sciences, McDonnell Center for Studies of Higher Brain Function, Mallinckrodt Institute of Radiology, Washington University Department of Psycholog
Marcus E. Raichle
Washington University School of Medicine, Departments of Neurology, Neurological Surgery and Radiation Sciences, McDonnell Center for Studies of Higher Brain Function, Mallinckrodt Institute of Radiology, Washington University Department of Psycholog
Abstract

PET images of blood flow change that were averaged across individuals were used to identify brain areas related to lexical (single-word) processing, A small number of discrete areas were activated during several task conditions including: modality-specific (auditory or visual) areas activated by passive word input, primary motor and premotor areas during speech output, and yet further areas during tasks making semantic or intentional demands.