Stroop performance in normal control subjects: an fMRI study.

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Functional Magnetic Resonance Imaging (fMRI)

Background:

• The Stroop Color-Word task is a common cognitive test.
• Previous studies have shown varied results regarding brain activation patterns during this task.
• Understanding regional signal intensity changes is crucial for interpreting fMRI data.

Purpose of the Study:

• To investigate regional signal intensity changes in the brain during the Stroop Color-Word task.
• To identify specific brain regions associated with the interference condition of the task.
• To correlate brain activity with task performance in healthy adults.

Main Methods:

• Functional magnetic resonance imaging (fMRI) BOLD technique was employed.
• Healthy subjects performed a modified version of the Stroop Color-Word task.
• Signal intensity changes were analyzed in specific subdivisions of the anterior cingulate cortex.

Main Results:

• Both the anterior attentional area (AAA) and ventral occipital-auditory (VOA) subdivisions of the anterior cingulate cortex showed significant activation during interference.
• Only signal intensity changes within the VOA correlated with task performance.
• Signal intensity in the VOA was significantly higher during interference compared to color naming.

Conclusions:

• The ventral occipital-auditory (VOA) subdivision of the anterior cingulate cortex is specifically linked to the cognitive demands of the Stroop task's interference condition.
• This finding provides a more precise understanding of the neural correlates of cognitive interference.
• The study highlights the importance of examining specific subregions within the anterior cingulate cortex for cognitive tasks.