Multivariate pattern analysis of cooperation and competition in constructive action

Area of Science:

• Neuroscience
• Social Cognitive Neuroscience

Background:

• Previous research used mass-univariate methods to study cooperative and competitive neural activity.
• Cooperation has been linked to reward-related brain circuits in prior studies.

Purpose of the Study:

• To compare mass-univariate and multivariate pattern analysis (MVPA) findings on cooperative vs. competitive neural activity.
• To verify if MVPA confirms cooperation's association with reward circuits.
• To investigate the neural basis of distinguishing cooperation from competition.

Main Methods:

• Functional magnetic resonance imaging (fMRI) during a pattern construction task.
• Multivariate Pattern Analysis (MVPA) and Representational Similarity Analysis (RSA).
• Mass-univariate activation analyses, including single-trial analysis.

Main Results:

• MVPA and RSA identified orbitofrontal and ventromedial prefrontal areas differentiating cooperation and competition.
• Activation analysis showed these areas were more active during cooperation.
• Single-trial analysis revealed higher reward circuit activation in competition during winning trials.
• The difference between won and lost trials was more pronounced in competition.

Conclusions:

• Cooperation and competition recruit distinct neural processes, particularly in prefrontal reward circuits.
• While cooperation may be generally more rewarding, competition elicits a stronger neural response to personal success or failure.
• Shared outcomes in cooperation may attenuate individual reward circuit responses compared to competitive personal victories.