Brain Functional Profiles in Formal and Semantic Fluency Tasks: A SPECT Study in Normals

SPECT method is used to analyze changes in regional cerebral blood flow in a group of 19 normal subjects during a baseline task (repetition of two words) and two verbal fluency tasks, a semantic fluency and a formal fluency. The semantic fluency task was associated with a relative CBF increase in th...

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Bibliographic Details
Published in:Brain and language 1996-02, Vol.52 (2), p.305-313
Main Authors: Cardebat, D., Démonet, J.F., Viallard, G., Faure, S., Puel, M., Celsis, P.
Format: Article
Language:English
Subjects:
Adult
Anatomical correlates of behavior
Behavioral psychophysiology
Biological and medical sciences
Brain - blood supply
Brain - diagnostic imaging
Fundamental and applied biological sciences. Psychology
Humans
Language
Male
Middle Aged
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Regional Blood Flow
Semantics
Tomography, Emission-Computed, Single-Photon
Verbal Behavior
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Summary:SPECT method is used to analyze changes in regional cerebral blood flow in a group of 19 normal subjects during a baseline task (repetition of two words) and two verbal fluency tasks, a semantic fluency and a formal fluency. The semantic fluency task was associated with a relative CBF increase in the right dorso-lateral and medial frontal region when compared with that seen in the baseline condition. No specific activation was found for the formal fluency task compared to that seen in the baseline task. We suggest that the activation of the right frontal region reflects semantic categorization strategies in semantic fluency. The lack of activation of the left frontal region may be due to an activation induced by the nature of the baseline task (i.e., a self-paced repetition task).
ISSN:0093-934X
1090-2155
DOI:10.1006/brln.1996.0013