Cognition and affective style: Individual differences in brain electrical activity during spatial and verbal tasks

Area of Science:

• Neuroscience
• Cognitive Psychology
• Affective Science

Background:

• Affective style, characterized by positive or negative affectivity, may influence cognitive functioning.
• Understanding the neural correlates of cognitive tasks in relation to affect is crucial for a comprehensive view of brain-behavior relationships.

Purpose of the Study:

• To investigate the relationship between brain electrical activity and performance on spatial and verbal cognitive tasks.
• To examine how individual differences in positive and negative affectivity modulate cognitive performance and associated electroencephalographic (EEG) patterns.

Main Methods:

• Electroencephalography (EEG) was recorded from 25 healthy women during baseline and during matched spatial and verbal cognitive tasks.
• Participants were selected based on high self-reported positive or negative affectivity.
• Performance metrics (scores) and EEG data (alpha suppression, power values) were analyzed in relation to task type and affectivity group.

Main Results:

• Participants high in positive affectivity showed equivalent performance on both tasks.
• Participants high in negative affectivity performed significantly worse on spatial tasks compared to verbal tasks.
• Both groups displayed left central EEG activation during cognitive tasks, but distinct patterns of parietal activation were observed between groups for the spatial task.

Conclusions:

• Affective style interacts with cognitive task performance and the underlying brain electrical activity.
• Individual differences in affectivity are associated with differential patterns of neural activation during cognitive processing.
• These findings highlight the complex interplay between emotion, cognition, and brain function in healthy individuals.