Neural substrates of context- and person-dependent altruistic punishment
| Autor: | Ruida Zhu, Xiaping Lu, Lucas S. Broster, Chunliang Feng, Rui Xu, Lili Wang, Ruolei Gu |
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| Rok vydání: | 2017 |
| Předmět: |
Temporoparietal junction
Diffusion of responsibility Context (language use) behavioral disciplines and activities Brain mapping 050105 experimental psychology 03 medical and health sciences 0302 clinical medicine medicine 0501 psychology and cognitive sciences Radiology Nuclear Medicine and imaging Anterior cingulate cortex Radiological and Ultrasound Technology medicine.diagnostic_test 05 social sciences Psychophysiological Interaction medicine.anatomical_structure Neurology Posterior cingulate Neurology (clinical) Anatomy Psychology Functional magnetic resonance imaging psychological phenomena and processes 030217 neurology & neurosurgery Cognitive psychology |
| Zdroj: | Human Brain Mapping. 38:5535-5550 |
| ISSN: | 1065-9471 |
| Popis: | Human altruistic behaviors are heterogeneous across both contexts and people, whereas the neural signatures underlying the heterogeneity remain to be elucidated. To address this issue, we examined the neural signatures underlying the context- and person-dependent altruistic punishment, conjoining event-related fMRI with both task-based and resting-state functional connectivity (RSFC). Acting as an impartial third party, participants decided how to punish norm violators either alone or in the presence of putative others. We found that the presence of others decreased altruistic punishment due to diffusion of responsibility. Those behavioral effects paralleled altered neural responses in the dorsal anterior cingulate cortex (dACC) and putamen. Further, we identified modulation of responsibility diffusion on task-based functional connectivity of dACC with the brain regions implicated in reward processing (i.e., posterior cingulate cortex and amygdala/orbital frontal cortex). Finally, the RSFC results revealed that (i) increased intrinsic connectivity strengths of the putamen with temporoparietal junction and dorsolateral PFC were associated with attenuated responsibility diffusion in altruistic punishment and (ii) increased putamen-dorsomedial PFC connectivity strengths were associated with reduced responsibility diffusion in self-reported responsibility. Taken together, our findings elucidate the context- and person-dependent altruistic behaviors as well as associated neural substrates and thus provide a potential neurocognitive mechanism of heterogeneous human altruistic behaviors. Hum Brain Mapp 38:5535-5550, 2017. © 2017 Wiley Periodicals, Inc. |
| Databáze: | OpenAIRE |
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