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Cascade of neural processing orchestrates cognitive control in human frontal cortex.
Hanlin Tang1,2, Hsiang-Yu Yu3,4, Chien-Chen Chou3,4
1Program in Biophysics, Harvard University, Boston, United States.
Elife
|February 19, 2016
Summary
Cognitive control involves frontal cortex regions. This study found a temporal hierarchy in frontal subregions, with anterior cingulate cortex (ACC) initiating signals before others during conflict resolution.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Cognitive Control
Background:
- Cognitive control, essential for managing conflicting information, is primarily orchestrated by the frontal cortex.
- The specific roles of distinct frontal cortex subregions in this process remain unclear.
Purpose of the Study:
- To investigate the temporal dynamics of cognitive control across different frontal cortex subregions.
- To understand how the brain resolves conflicting sensory inputs in relation to goals.
Main Methods:
- Utilized intracranial recordings in epilepsy patients for high spatiotemporal resolution.
- Analyzed brain activity during a color-word conflict task.
Main Results:
- Observed differential brain activity preceding behavioral responses to conflict trials across the frontal cortex.
- This activity correlated with behavioral reaction times.
- Identified a temporal sequence: signals emerged first in anterior cingulate cortex (ACC), then dorsolateral prefrontal cortex (dlPFC), followed by medial frontal cortex (mFC), and finally orbitofrontal cortex (OFC).
Conclusions:
- The findings dissociate frontal subregions based on their dynamic contributions to cognitive control.
- Suggests a temporal hierarchy within the human frontal cortex for orchestrating cognitive control.
Keywords:
cognitive controlcomputational neurosciencefrontal cortexhumanhuman neurophysiologyneurosciencevolitional controlMore Related Videos
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