Related Experiment Videos
Cognitive control in the posterior frontolateral cortex: evidence from common activations in task coordination,
Jan Derrfuss1, Marcel Brass, D Yves von Cramon
1Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Stephanstr. 1A, 04103 Leipzig, Germany. derrfuss@cbs.mpg.de
Neuroimage
|October 19, 2004
Summary
The inferior frontal junction (IFJ) is crucial for cognitive control, alongside other brain regions. This study confirms the IFJ
Area of Science:
- Neuroscience
- Cognitive Neuroscience
Background:
- Cognitive control is typically linked to the middorsolateral prefrontal cortex.
- Emerging evidence suggests a posterior frontolateral region, the inferior frontal junction (IFJ), is also vital.
Purpose of the Study:
- To investigate the role of the IFJ in cognitive control.
- To identify brain regions commonly activated during tasks requiring task-switching, interference control, and working memory.
Main Methods:
- A within-session, within-group design was employed.
- Participants completed a task-switching paradigm, a manual Stroop task, and a verbal n-back task.
- Functional brain activations were analyzed using fMRI and contrasted across tasks.
Main Results:
- Common brain activations were identified in the IFJ, pre-supplementary motor area (pre-SMA), middle frontal gyrus, anterior insula, parietal, and thalamic regions.
- The IFJ showed significant activation across all tested cognitive control tasks.
- These findings support a distributed network model for cognitive control.
Conclusions:
- The IFJ is a key node in the neural network supporting cognitive control.
- Cognitive control involves a network including prefrontal, parietal, and subcortical areas.
- The IFJ plays a significant role in cognitive control, complementing the function of the middorsolateral prefrontal cortex.