童年虐待与较低的探索和中断的前额活动和连接性有关,在波动的环境中奖励学习期间,儿童虐待与较低的探索和中断的前额活动和连接性有关
Diana J N Armbruster-Genç1,2, Louise Neil1, Vincent Valton3
1Division of Psychology and Language Sciences, University College London, London, UK.
Journal of child psychology and psychiatry, and allied disciplines
|December 12, 2024
概括
童年虐待影响年轻人学习奖励. 较低的探索可能会防止内化症状,而改变大脑对奖励波动性的反应表明对精神疾病的脆弱性.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 发展心理学 发展心理学
背景情况:
- 童年虐待与精神疾病和非典型的奖励处理有关.
- 奖励处理变化可能代表心理病理学的潜在脆弱性机制.
- 这项研究纵向研究了虐待对奖励学习和未来心理健康的影响.
研究的目的:
- 检查童年虐待如何影响在不断变化的环境中奖励学习的行为和神经方面.
- 评估这些效应是否预测未来的精神病理.
- 了解改变奖励处理对长期心理健康的影响.
主要方法:
- 对37名受虐待 (MT) 和32名未受虐待 (NMT) 的儿童/青少年 (年龄10-16岁) 的长度研究.
- 使用一种概率强化学习任务,具有稳定和波动的奖励阶段.
- 通过fMRI,计算建模和回归分析评估大脑激活和连接,以预测后续症状.
主要成果:
- MT组表现出较低的行为探索,在随访时预测了较少的内化症状.
- 在不稳定的环境中,MT组显示了轨道前皮层 (OFC) 激活的减少.
- 较低的OFC与中皮质的连接预测了更高的一般精神病理.
结论:
- 虐待后的低探索性行为可能是防止内化症状的保护性适应.
- 在不稳定的环境中,奖励学习的神经处理中断表明潜伏于精神疾病的脆弱性.
- 这些发现突出了奖励回路中对虐待的不同适应性和不适应性反应.
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