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Social Neuroscience

Open Unknowns

Cross-Domain Bridges

Active Hypotheses

Cross-Domain Bridges

Bridge Mirror neurons fire both when executing an action and when observing another perform it — providing the neural substrate for motor empathy, aesthetic experience, and imitation learning, with direct implications for understanding the uncanny valley, embodied simulation in art viewing, and the neural basis of social cognition.

Fields: Art And Cognition, Neuroscience, Cognitive Science, Social Neuroscience, Aesthetics

Rizzolatti et al. (1996) discovered "mirror neurons" in macaque premotor cortex (area F5) that fire both when the monkey executes a specific hand action (grasping) and when it observes another individ...

Open Unknowns (1)

Unknown Are the parochial altruism effects of oxytocin (increased in-group cooperation, decreased out-group trust) large enough, robust enough, and manipulable enough to have policy-relevant implications for inter-group conflict and diversity- cooperation tradeoffs, or are they small-effect laboratory phenomena that do not generalise to real social behaviour? u-oxytocin-parochial-altruism-policy-implications

Active Hypotheses

Hypothesis Social cognition is implemented by a dedicated mentalizing network (TPJ, mPFC, precuneus, STS) that is functionally and anatomically dissociable from non-social cognition networks, with action understanding mediated by mirror neuron regions (IFG, IPL) operating in parallel rather than as a prerequisite for mentalizing high

Hypothesis The relationship between social isolation and mortality risk (Holt-Lunstad meta-analysis: OR ~ 1.29) is mediated by dACC-driven allostatic load — specifically, chronic social isolation increases dACC hyperreactivity to threat, elevating cortisol and inflammatory cytokines (IL-6, CRP) that drive cardiovascular and immune pathology. high

Hypothesis Theory of mind (ToM) emerges at age 3-4 from the maturation of bilateral temporoparietal junction (TPJ) connectivity to the medial prefrontal cortex, with the right TPJ specifically encoding the perspective-taking component, and the transition from implicit to explicit ToM reflecting frontal executive maturation rather than the emergence of a new social module. medium

Hypothesis The right temporoparietal junction (rTPJ) is the minimal neural substrate necessary for explicit belief attribution and false-belief understanding, developing functional specialization by age 4-5 through experience-dependent myelination, with disruption producing autism spectrum social deficits high

Hypothesis The implicit-explicit theory of mind dissociation in great apes (and in human infants under 4 years) reflects a phylogenetically conserved subcortical mentalization system (STS + amygdala) that tracks agent behavior online without propositional belief representation, while explicit ToM requires PFC-TPJ circuitry for constructing and manipulating belief propositions — making the two systems dissociable by lesion and by task structure. high

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