Exploring Relevant Scales for Human Brains in Society

Humans inherently interact with and shape their environment, thereby influencing their cognition and brain function. The complexity of these interactions, particularly the temporal, spatial, and social dimensions, is crucial for understanding our brains, yet its full breadth remains elusive. This presentation delves into the expansion of computational scales within the human brain, examining the role of historical dependencies in decision-making and identifying socially relevant scales for the brain. Special focus will be placed on the study of trust and well-being in relation to relational mobility, and their manifestation in functional MRI studies using network-based Prisoner’s Dilemma tasks. Experimental results suggest increased cooperative behavior in larger, flexible social structures. Computational models reveal an adoption of more tolerant strategies with increasing group sizes, underpinned by brain regions associated with memory, social, and decision-making functions.