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Positron Emission Tomographic Studies of the Processing of Singe Words

Journal of Cognitive Neuroscience · 1989 · Vol. 1(2) · pp. 153–170

Steven E. Petersen✉(Mallinckrodt (United States))Peter T. Fox(Neurological Surgery)Michael I. Posner(Neurological Surgery)Mark A. Mintun(Neurological Surgery)Marcus E. Raichle(Neurological Surgery)

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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.

Hemispheric Asymmetry in Neuroscience Neurobiology of Language and Bilingualism Reading and Literacy DevelopmentPsychologyModality (human–computer interaction)Word (group theory)Task (project management)Semantic memoryCognitive psychologyPositron emission tomographyCommunicationCognitionNeuroscience

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Common Blood Flow Changes across Visual Tasks: II. Decreases in Cerebral Cortex