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Neural mechanisms involved in error processing: a comparison of errors made with and without awareness
Robert Hester1, John J Foxe, Sophie Molholm
1Department of Psychology and Trinity College Institute of Neuroscience, Trinity College, Dublin, Ireland. hesterr@unimelb.edu.au
Neuroimage
|July 19, 2005
Summary
Detecting your own errors and adjusting behavior is key. Brain scans show prefrontal and parietal activity for aware errors, but the anterior cingulate cortex detects all errors, regardless of awareness.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Brain Imaging
Background:
- Effective behavior relies on error detection and subsequent performance adjustment.
- The anterior cingulate cortex (ACC) is traditionally linked to error processing.
- Understanding the neural basis of error awareness and post-error adaptation is crucial.
Purpose of the Study:
- To investigate the neural correlates of explicit error awareness and post-error behavioral adjustments.
- To differentiate the roles of the anterior cingulate cortex versus other brain regions in error detection and conscious awareness.
Main Methods:
- Event-related functional magnetic resonance imaging (fMRI) was employed.
- Participants performed a task requiring response inhibition.
- Brain activation patterns were analyzed in relation to error commission, awareness, and subsequent performance.
Main Results:
- Explicit awareness of response inhibition errors and post-error adjustments correlated with bilateral prefrontal and parietal activation.
- Anterior cingulate cortex (ACC) activation was similar for both aware and unaware errors.
- ACC activity alone was insufficient for conscious error recognition or strategic behavioral change.
Conclusions:
- While the ACC detects errors irrespective of awareness, prefrontal and parietal regions are critical for conscious error recognition and behavioral adaptation.
- Conscious error awareness and post-error strategy adjustment involve a network beyond the ACC.
- Error detection and strategic behavioral modification are dissociable processes mediated by distinct neural systems.