在童年期间,参与风险决策的三元神经系统的发展
Min Jiang1, Rui Ding1, Yanli Zhao2
1State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing 100875, China.
儿童的风险承担逐渐发展,显示出未成熟的决策大脑系统. 这项研究揭示了童年风险行为期间奖励和控制系统的年龄相关差异.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 认知科学 认知科学
背景情况:
- 冒险是一种由多个因素影响的复杂行为.
- 三元神经系统模型强调了激励和控制系统在调节风险方面的相互作用.
- 这些系统在儿童时期的发育轨迹尚不清楚.
研究的目的:
- 研究与年龄相关的神经系统的差异,这些差异是学龄儿童做出风险决策的基础.
- 为了比较儿童和年轻人的风险承担的神经相关值.
主要方法:
- 利用神经成像技术检查大脑激活和功能连接.
- 在218名学龄儿童和80名年轻成年人在冒险决策任务中比较神经活动和网络特性.
主要成果:
- 儿童表现出比成年人更少的奖励寻求和冒险,从6岁到12岁逐渐增加.
- 与成年人相比,儿童表现出较弱的前额控制系统激活,但较强的条状奖励系统激活.
- 网络分析表明,在三元系统内和三元系统之间,儿童的奖励相关功能连接性更大.
结论:
- 研究结果表明,神经认知系统的不成熟和不平衡的发育导致了儿童中期和晚期的风险承担.
- 神经系统中的这些发育差异与风险行为中的与年龄相关的变化有关.
- 这项研究提供了关于自适应风险调节的神经发育基础的见解.
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