Journal
NEUROIMAGE
Volume 14, Issue 2, Pages 258-267Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/nimg.2001.0846
Keywords
positron emission tomography; inhibition; executive functions; prefrontal cortex
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The cortical areas involved in inhibition processes were examined with positron emission tomography (PET). The tasks administered to subjects were an adaptation of the Hayling test. In the first condition (response initiation), subjects had to complete sentences with a word clearly suggested by the context, whereas in the second condition (response inhibition), subjects had to produce a word that made no sense in the context of the sentence. Results indicated that the response initiation processes were associated to increases of activity in the left inferior frontal gyrus (BA 45/47), whereas response inhibition processes led to increases in a network of left prefrontal areas, including the middle (BA 9 and BA 10) and inferior (BA 45) frontal areas. (C) 2001 Academic Press.
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