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Updated: Jul 6, 2026

The Dig Task: A Simple Scent Discrimination Reveals Deficits Following Frontal Brain Damage
Published on: January 4, 2013
A remarkable facilitating effect of parietal damage.
1Départment de Physiologie, Université de Montréal, Montréal, QC H3C 3J7, Canada. paul.cisek@umontreal.ca
Distracters usually slow reactions, but right parietal lobe damage speeds them up. This finding reveals the parietal cortex
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurobiology
Background:
- Conflict monitoring and response inhibition are crucial for goal-directed behavior.
- Typically, conflicting distracters increase reaction times due to cognitive load.
Discussion:
- Right parietal lobe damage alters conflict processing.
- This damage paradoxically enhances response speed when distracters conflict with instructions.
Key Insights:
- The right parietal cortex plays a critical role in modulating behavioral responses to conflicting stimuli.
- Damage to this area disrupts normal conflict adaptation mechanisms.
Outlook:
- Further research into parietal cortex function can illuminate neural circuits for voluntary control.
- Understanding these mechanisms may have implications for neurological disorders affecting attention and behavior.
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