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The aim of this study was to examine differences in the neural processing of social information about kin and friends at different levels of closeness and social network level. Twenty-five female participants engaged in a cognitive social task involving different individuals in their social network while undergoing functional magnetic resonance imaging scanning to detect BOLD (Blood Oxygen Level Dependent) signals changes. Greater levels of activation occurred in several regions of the brain previously associated with social cognition when thinking about friends than when thinking about kin, including the posterior cingulate cortex (PCC) and the ventral medial prefrontal cortex (vMPFC). Linear parametric analyses across network layers further showed that, when it came to thinking about friends, activation increased in the vMPFC, lingual gyrus, and sensorimotor cortex as individuals thought about friends at closer layers of the network. These findings suggest that maintaining friendships may be more cognitively exacting than maintaining kin relationships.

Original publication

DOI

10.1093/scan/nsw101

Type

Journal article

Journal

Soc Cogn Affect Neurosci

Publication Date

12/2016

Volume

11

Pages

1952 - 1960

Keywords

fMRI, friendship, kin, social cognition, social networks, Adolescent, Adult, Brain, Brain Mapping, Cognition, Family, Female, Friends, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Social Behavior, Social Perception, Social Support, Thinking, Young Adult