社会背景和奖励灵敏度 在分享奖励的经验中增强皮质前皮质功能
Ori Zaff1, James B Wyngaarden1, Jeffrey B Dennison1
1Department of Psychology & Neuroscience, Temple University, Philadelphia, PA, USA.
bioRxiv : the preprint server for biology
|October 31, 2023
概括
奖励灵敏度和物质使用的个体差异会影响大脑对与朋友或陌生人分享奖励的反应. 这种神经反应调制可能预测心理健康障碍风险.
科学领域:
- 神经科学是一个神经科学.
- 社会心理学 社会心理学
- 认知科学 认知科学
背景情况:
- 之前的研究表明,当与密切的社会联系分享奖励时,条形状反应加剧.
- 奖励灵敏度和物质使用的个体差异与腹条状 (VS) 激活有关.
- 对于这些因素如何在社会背景下影响神经奖励处理的理解有限.
研究的目的:
- 调查奖励敏感性和物质使用与社交环境中的神经奖励反应的独立关联.
- 检查与不同社会合作伙伴共享奖励如何影响腹状条状腺 (VS) 激活和连接.
- 确定个人差异是否调节大脑对社会奖励的反应.
主要方法:
- 45名参与者完成了预先注册的fMRI研究.
- 参与者玩了一场猜牌游戏,涉及与朋友,陌生人或非人类合作伙伴共享的货币收益/损失.
- 分析了腹腔条纹 (VS) 激活和功能连接.
主要成果:
- 与陌生人相比,当与亲密的朋友分享奖励时,观察到增加了VS激活.
- 更高的奖励灵敏度降低了朋友和陌生人条件之间的VS反应的差异.
- 在与朋友和陌生人分享奖励时,出现了增强的VS-temporoparietal接口连接.
- 探索性分析表明,根据社会背景,奖励灵敏度和物质使用影响了与右状面部区域的VS连接.
结论:
- 对社会环境,特别是与亲密朋友的神经反应性与个人奖励敏感性和亚临床物质使用有关.
- 这些因素的结合可能有助于预测未来精神健康障碍的风险.
- 个人差异极大地影响了神经对社会奖励的处理.
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