The neural basis of emotional generalization in empathy
Hayden, B.; Allawalla, A.; Adkinson, J.; Fan, X.; Franch, M.; Gates, V.; Mathura, R.; Pascuzzi, B.; Mocchi, M.; Myers, J.; Pulapaka, S.; Banks, G.; Bartoli, E.; Goodman, W.; Mathew, S.; Pitkow, X.; Pouratian, N.; Provenza, N.; Shofty, B.; Watrous, A.; Bijanki, K.; Sheth, S.; Yoo, S. B. M.
Show abstract
The essence of empathy is generalization of emotion across persons. Here, we leverage recent theoretical advances in the neuroscience of generalization to help us understand empathy. We measured brain activity in human neurosurgical patients performing two tasks, one focused on identifying their own emotional response and one identifying emotional responses in others. We quantified the representational geometry of local field potential (LFP) high-gamma activity in four regions: the medial temporal lobe, anterior cingulate cortex, orbitofrontal cortex, and insula. We found encoding of both self- and other-emotions in all four regions, but codes for emotion and person are disentangled (that is, factorized) in the insula, but not the other regions. This factorized representation allows for cross-person generalization of emotion in a way that tangled (non-factorized) representations do not. Together, these results support the hypothesis that the insula uniquely contributes to social mirroring processes by which we understand emotions across individuals.
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