Brain function with complex decision making using electroencephalography.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Psychophysiology

Background:

• Complex decision-making (CDM) is crucial for daily living.
• Previous research has developed computer-administered CDM assessments.
• Understanding the neural correlates of CDM is essential.

Purpose of the Study:

• To identify unique patterns of brain activity in the alpha band associated with complex decision making (CDM).
• To investigate the relationship between EEG spectral power, behavioral performance, and executive functioning during CDM tasks.

Main Methods:

• Recorded electroencephalogram (EEG) from 30 scalp sites in 16 healthy young adults.
• Participants completed baseline, eyes-open fixation, and CDM tasks simulating real-world decisions.
• EEG data were analyzed across different frequency bands, with a focus on alpha bands (alpha1, alpha2, alpha3).

Main Results:

• Significant decreases in EEG power were observed in alpha bands (8-14 Hz) from baseline to CDM tasks.
• Significant increases in delta, theta, beta, and gamma band activity were noted during CDM.
• Correlations found between alpha band activity, CDM task performance, and executive functioning measures (Trail-making Test, Wisconsin Card Sorting Task).

Conclusions:

• Brain activity in alpha frequency bands is distinct during complex decision making.
• Alpha band activity patterns during CDM are related to executive functioning.
• These findings provide insights into the neural underpinnings of real-world decision-making processes.