居住在暴力犯罪率较高的社区与较低的奖励相关的大脑功能有关
Zoe V Adogli1, Iris Ka-Yi Chat, Andrew A Gepty
1Department of Psychology and Neuroscience, Temple University (Adogli, Chat, Gepty, Flaig, Alloy); Seattle Children's Research Institute, Seattle Children's Hospital (Gepty); Department of Psychology, Northwestern University (Carroll, Damme, Nusslock).
生活在犯罪率高的街区与大脑中奖励预期的模糊性有关.
科学领域:
- 神经科学是一个神经科学.
- 环境心理学 环境心理学
- 发展心理学 发展心理学
背景情况:
- 逆境暴露会影响神经发育和决策.
- 社区暴力犯罪率高,对环境造成重大不利影响.
- 关于邻居层面的逆境对大脑功能影响的研究有限.
研究的目的:
- 调查生活在高犯罪率社区和青少年和新兴成年人中奖励相关的神经激活之间的联系.
- 测试邻里暴力犯罪率改变与奖励处理相关的大脑功能的假设.
主要方法:
- 使用功能磁共振成像 (fMRI) 货币激励延迟任务.
- 参与者 (N=101) 包括55%的女性.
- 来自联邦调查局的暴力犯罪统计与核 (NAc) 和轨道前皮层 (OFC) 激活相关.
主要成果:
- 生活在高犯罪率地区与在奖励预期期间减少NAc激活相关 (P=0.032).
- 没有发现与预期期间的OFC激活或奖励结果期间的NAc/OFC激活有显著的关联.
- 邻里犯罪率解释了NAc激活变异的6.1%.
结论:
- 在犯罪率高的社区中,环境威胁可能会削弱核结合因子 (NAc) 的奖励预期.
- 被动地暴露在邻居的逆境中,可能会导致与奖励相关的大脑功能的明显个体差异.
- 研究结果强调了社区层面环境因素对神经生物学的影响.
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