PMID- 28645841 OWN - NLM STAT- MEDLINE DCOM- 20180528 LR - 20180904 IS - 1095-9572 (Electronic) IS - 1053-8119 (Linking) VI - 157 DP - 2017 Aug 15 TI - How do self-interest and other-need interact in the brain to determine altruistic behavior? PG - 598-611 LID - S1053-8119(17)30509-8 [pii] LID - 10.1016/j.neuroimage.2017.06.040 [doi] AB - Altruistic behavior, i.e., promoting the welfare of others at a cost to oneself, is subserved by the integration of various social, affective, and economic factors represented in extensive brain regions. However, it is unclear how different regions interact to process/integrate information regarding the helper's interest and recipient's need when deciding whether to behave altruistically. Here we combined an interactive game with functional Magnetic Resonance Imaging (fMRI) and transcranial direct current stimulation (tDCS) to characterize the neural network underlying the processing/integration of self-interest and other-need. At the behavioral level, high self-risk decreased helping behavior and high other-need increased helping behavior. At the neural level, activity in medial prefrontal cortex (MPFC) and right dorsolateral prefrontal cortex (rDLPFC) were positively associated with self-risk levels, and activity in right inferior parietal lobe (rIPL) and rDLPFC were negatively associated with other-need levels. Dynamic causal modeling further suggested that both MPFC and rIPL were extrinsically connected to rDLPFC; high self-risk enhanced the effective connectivity from MPFC to rDLPFC, and the modulatory effect of other-need on the connectivity from rIPL to rDLPFC positively correlated with the modulatory effect of other-need on individuals' helping rate. Two tDCS experiments provided causal evidence that rDLPFC affects both self-interest and other-need concerns, and rIPL selectively affects the other-need concerns. These findings suggest a crucial role of the MPFC-IPL-DLPFC network during altruistic decision-making, with rDLPFC as a central node for integrating and modulating motives regarding self-interest and other-need. CI - Copyright (c) 2017. Published by Elsevier Inc. FAU - Hu, Jie AU - Hu J AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China. FAU - Li, Yue AU - Li Y AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China. FAU - Yin, Yunlu AU - Yin Y AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China. FAU - Blue, Philip R AU - Blue PR AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China. FAU - Yu, Hongbo AU - Yu H AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China. FAU - Zhou, Xiaolin AU - Zhou X AD - Center for Brain and Cognitive Sciences, Peking University, Beijing 100871, China; School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China; Key Laboratory of Machine Perception (Ministry of Education), Peking University, Beijing 100871, China; Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China; PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China. Electronic address: xz104@pku.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170620 PL - United States TA - Neuroimage JT - NeuroImage JID - 9215515 SB - IM MH - Adolescent MH - Adult MH - *Altruism MH - Brain Mapping/*methods MH - Female MH - *Helping Behavior MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Parietal Lobe/diagnostic imaging/*physiology MH - Prefrontal Cortex/diagnostic imaging/*physiology MH - *Risk-Taking MH - Transcranial Direct Current Stimulation/*methods MH - Young Adult EDAT- 2017/06/25 06:00 MHDA- 2018/05/29 06:00 CRDT- 2017/06/25 06:00 PHST- 2016/12/21 00:00 [received] PHST- 2017/06/09 00:00 [revised] PHST- 2017/06/16 00:00 [accepted] PHST- 2017/06/25 06:00 [pubmed] PHST- 2018/05/29 06:00 [medline] PHST- 2017/06/25 06:00 [entrez] AID - S1053-8119(17)30509-8 [pii] AID - 10.1016/j.neuroimage.2017.06.040 [doi] PST - ppublish SO - Neuroimage. 2017 Aug 15;157:598-611. doi: 10.1016/j.neuroimage.2017.06.040. Epub 2017 Jun 20.