Journal
NEUROREPORT
Volume 16, Issue 7, Pages 755-760Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00001756-200505120-00020
Keywords
anterior cingulate cortex; error processing; fMRI; inhibition; prefrontal cortex
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Funding
- NIDA NIH HHS [R01DA016663, R21DA13186, R01DA13186] Funding Source: Medline
- NIMH NIH HHS [5T32MH18399] Funding Source: Medline
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Inhibition, the process that overrides and reverses the execution of a thought, action, or emotion, is important in daily life. Sixteen healthy volunteers performed a parametrically modulated motor inhibition task during functional magnetic resonance imaging. Two results were observed: (1) increased error-related anterior cingulate cortex activation and, (2) increased inferior frontal gyrus and medial prefrontal cortex activation during inhibition, irrespective of errors. Thus, the parametric nature of the task elucidated a functional dissociation of brain structures involved in motor inhibition from those involved in error processing. Additionally, this task allowed the identification of unique areas of increased activation within specific subregions of the anterior cingulate cortex related to errors made during trials with a high (dorsal anterior cingulate cortex) and low (ventral anterior cingulate cortex) inhibitory load. NeuroReport 16:755-760 © 2005 Lippincott Williams & Wilkins.
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