Distinctive amygdala subregions involved in emotion-modulated Stroop interference.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Emotional Processing

Background:

• The amygdala's role in emotional interference with cognitive tasks is established, but its subregions' specific functions remain unclear.
• Understanding these distinctions is crucial for elucidating emotion-cognition interactions.

Purpose of the Study:

• To differentiate the neural processes of emotional information detection from the regulation of cognitive interference by emotional distractors.
• To investigate the distinct roles of amygdala subregions in emotion-modulated cognitive tasks.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used in female participants performing a temporal-gap Stroop task with emotional and neutral stimuli.
• Behavioral (reaction time) and neural data were analyzed to assess emotional interference and amygdala subregion activity.

Main Results:

• Negative emotional stimuli significantly increased the Stroop interference effect compared to neutral stimuli.
• The anterior ventral amygdala (avAMYG) showed heightened responses to negative stimuli.
• Individuals high in neuroticism exhibited increased posterior dorsal amygdala (pdAMYG) activity during cognitive interference from negative distractors.

Conclusions:

• The anterior ventral amygdala (avAMYG) appears to encode the associative value of emotional stimuli.
• The posterior dorsal amygdala (pdAMYG) is involved in resolving cognitive interference caused by emotional distractors.
• These findings highlight functionally distinct roles for avAMYG and pdAMYG in emotion-cognition interactions.