The causal role of the somatosensory cortex in prosocial behaviour

eLife

Carolina Fernandes-Henriques¹  Laura Müller-Pinzler²  Mario Carlo Severo³  Selene Gallo⁴  Judith Suttrup⁴  Alessio Avenanti⁴  Riccardo Paracampo⁴  Tatjana Maskaljunas⁴  Anna Henschel⁴  Christian Keysers⁴  Valeria Gazzola⁴  Laila Blömer⁴  Balint Kalista Lammes⁴ 

[1] Department of Psychiatry and Psychotherapy, Social Neuroscience Lab, University of Lübeck, Lübeck, Germany;Department of Psychology, Center for Studies and Research in Cognitive Neuroscience, University of Bologna, Cesena, Italy;IRCCS Fondazione Santa Lucia, Rome, Italy;Netherlands Institute for Neuroscience, Royal Netherlands Academy of Art and Sciences (KNAW), Amsterdam, Netherlands;

关键词: EEG;    empathy for pain;    helping;    SI;    TMS;   

DOI  :  10.7554/eLife.32740

来源: DOAJ

【 摘 要 】

Witnessing another person’s suffering elicits vicarious brain activity in areas that are active when we ourselves are in pain. Whether this activity influences prosocial behavior remains the subject of debate. Here participants witnessed a confederate express pain through a reaction of the swatted hand or through a facial expression, and could decide to reduce that pain by donating money. Participants donate more money on trials in which the confederate expressed more pain. Electroencephalography shows that activity of the somatosensory cortex I (SI) hand region explains variance in donation. Transcranial magnetic stimulation (TMS) shows that altering this activity interferes with the pain–donation coupling only when pain is expressed by the hand. High-definition transcranial direct current stimulation (HD-tDCS) shows that altering SI activity also interferes with pain perception. These experiments show that vicarious somatosensory activations contribute to prosocial decision-making and suggest that they do so by helping to transform observed reactions of affected body-parts into accurate perceptions of pain that are necessary for decision-making.

【 授权许可】

Unknown