风险偏好的神经调节编码在人类轨道前皮层活动中
bioRxiv : the preprint server for biology
|July 14, 2025
概括
轨道前皮层 (OFC) 中的大脑活动会影响冒险行为. 研究人员发现,OFC中低频脑电波与个人风险偏好相关,并且刺激OFC可以减少风险选择.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算精神病学是一种计算精神病学.
背景情况:
- 人类行为表现出广泛的风险偏好,从寻求风险到避免风险.
- 异常冒险是各种精神疾病的特征,包括博障碍和成.
- 了解个人风险偏好差异的神经支对于基础科学和临床应用都至关重要.
研究的目的:
- 调查风险偏好的个体间变化的神经相关性.
- 探索轨道前皮层 (OFC) 在经济决策和风险评估中的作用.
- 评估神经刺激对调节冒险行为的潜力.
主要方法:
- 在15名患者中,从人类OFC进行了侵入性电生理学记录.
- 利用风险决策任务和计算建模来量化风险偏好.
- 向OFC应用了有针对性的电刺激,并观察到对行为的影响.
主要成果:
- 在个人之间观察到风险偏好的显著差异.
- 在OFC中低频 (delta-theta) 振荡连贯性与这些稳定的个人间风险偏好有很强的相关性.
- OFC刺激导致风险承担行为的减少和更快的反应时间,而不会影响整体决策准确性.
- 为了整合风险信息,确定了一种神经生理机制,涉及低频和高频振荡之间的相幅度合.
结论:
- 人类OFC中的低频振荡连贯性作为经济决策偏好中稳定的个体间差异的神经基质.
- 有针对性的OFC神经刺激可以有效地减少过度冒险的行为,为因寻求风险增加而表现的疾病提供潜在的治疗策略.
- 这些发现为开发用于治疗成和博障碍等疾病的新型神经调节干预措施铺平了道路.
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