Network neuroscience: where the brain and social networks works the same
summary
Claim: brains and social networks share Rich Club hubs that concentrate communication and produce short paths (Facebook measured ~3.57 handshakes). Methods: connectivity is extracted from fMRI, electrophysiology or molecular traces and quantified with correlation weights. Key result: the weakest ~30% of connections — the weak ties explain ~40% of individual variance in measured intelligence — drive integration and flexible problem solving. Implication: both network architecture and tie strength, not just node activity, predict function and pathology.
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chapters (9)
- 0:00Network neuroscience intro
- 1:33Graph theory and brain networks
- 3:20Brain connectivity scales
- 8:38Six handshake theory
- 12:58Rich Club in brain
- 14:47Intelligence and activation
- 16:35Weak ties theory
- 20:12Brain vs social networks
- 23:05Mental health and networks
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