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EEG and fMRI Evidence for Autobiographical Memory Reactivation in Empathy

By Federica Meconi, Juan Linde-Domingo, Catarina S. Ferreira, Sebastian Michelmann, Bernhard P Staresina, Ian Apperly, Simon Hanslmayr

Posted 26 Jul 2019
bioRxiv DOI: 10.1101/715276

Empathy relies on the ability to mirror and to explicitly infer others’ inner states. Theoretical accounts suggest that memories play a role in empathy but direct evidence of a reactivation of autobiographical memories (AM) in empathy is yet to be shown. We addressed this question in two experiments. In experiment 1, electrophysiological activity (EEG) was recorded from 28 participants who performed an empathy task in which targets for empathy were depicted in contexts for which participants either did or did not have an AM, followed by a task that explicitly required memory retrieval of the AM and non-AM contexts. The retrieval task was implemented to extract the neural fingerprints of AM and non-AM contexts, which were then used to probe data from the empathy task. An EEG pattern classifier was trained and tested across tasks and showed evidence for AM reactivation when participants were preparing their judgement in the empathy task. Participants self-reported higher empathy for people depicted in situations they had experienced themselves as compared to situations they had not experienced. A second independent fMRI experiment replicated this behavioural finding and showed the predicted activation in the brain networks underlying both AM retrieval and empathy: precuneus, posterior parietal cortex, superior and inferior parietal lobule and superior frontal gyrus. Together, our study reports behavioural, electrophysiological and fMRI evidence that robustly supports the involvement of AM reactivation in empathy. ### Competing Interest Statement The authors have declared no competing interest. * AM : Autobiographical memory; non-AM : non-autobiographical memory; LDA : Linear Discriminant Analysis. IPL : Inferior Parietal Lobule; PCC : Posterior Cingulate Cortex; PHG : Parahippocampal Gyrus; SFG : Superior Frontal Gyrus; SPL : Superior Parietal Lobule; TPJ : Temporoparietal Junction.

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