A midline dissociation between error-processing and response-conflict monitoring.
Neuroimage
; 20(2): 1132-9, 2003 Oct.
Article
en En
| MEDLINE
| ID: mdl-14568482
ABSTRACT
Midline brain activation subsequent to errors has been proposed to reflect error detection and, alternatively, conflict-monitoring processes. Adjudicating between these alternatives is challenging as both predict high activation on error trials. In an effort to resolve these interpretations, subjects completed a GO/NOGO task in which errors of commission were frequent and response conflict was independently varied by manipulating response speeds. A mixed-block and event-related fMRI design identified task-related, tonic activation and event-related activations for correct and incorrect trials. The anterior cingulate was the only area with error-related activation that was not modulated by the conflict manipulation and hence is implicated in specific error-related processes. Conversely, activation in the pre-SMA was not specific to errors but was sensitive to the conflict manipulation. A significant region by conflict interaction for tonic activation supported a functional dissociation between these two midline areas. Finally, an intermediate, caudal cingulate area was implicated in both error processing and conflict monitoring. The results suggest that these two action-monitoring processes are distinct and dissociable and are localised along the midline.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Desempeño Psicomotor
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Encéfalo
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Conflicto Psicológico
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Lateralidad Funcional
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Neuroimage
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2003
Tipo del documento:
Article
País de afiliación:
Irlanda
Pais de publicación:
EEUU
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ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA