在阿尔茨海默氏症和帕金森病中,冷漠,基于努力的决策和大脑完整性
Lee-Anne Morris1,2, Hideo Suzuki3, Seonjoo Lee4
1Department of Medicine, University of Otago Christchurch, Christchurch, 8011, New Zealand.
Brain : a journal of neurology
|October 17, 2025
概括
阿尔茨海默氏症和帕金森病的冷漠性涉及改变基于努力的决策,疾病特异性的奖励和成本敏感性的变化. 动机丧失与大脑连接差异有关.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 神经学 神经学
背景情况:
- 漠不关心,或动机丧失,是阿尔茨海默病 (AD) 和帕金森病 (PD) 的常见症状.
- 基于努力的决策,对于以目标为导向的行为至关重要,涉及评估奖励与努力成本的奖励.
- 在漠不关心中观察到基于努力的决策中断,但具体的参数,神经相关性和疾病概括性仍然不清楚.
研究的目的:
- 为了调查基础决策参数中断的冷漠性在患有amnestic轻度认知障碍和可能的阿尔茨海默病 (aMCI/pAD) 和帕金森病 (PD) 的患者.
- 检查这些被破坏的参数的神经关联,包括大脑结构和连接.
- 为了确定这些变化是否在不同的神经系统疾病中普遍存在,或者是疾病特异性的.
主要方法:
- 患有MCI/pAD (n=37),PD (n=51) 和健康对照组 (n=21) 的参与者完成了一项基于身体努力的决策任务 (果收集任务).
- 收集了护理人员评估的冷漠度得分.
- 漂移扩散建模分析了选择数据和反应时间,以揭示潜在的认知过程,随后是回归和混合效应模型,以将这些过程与冷漠,诊断和大脑指标 (结构和连接) 联系起来.
主要成果:
- 在aMCI/pAD和PD中,冷漠与对较低回报的敏感性降低有关.
- 无动于衷在PD中增加了对高努力成本的敏感性,但在aMCI/pAD中降低了它.
- 漠不关心与拒绝报价的偏见相关,与背部注意网络功能连接的增加有关,在PD中,改变的动机与特定途径的白质完整性有关.
结论:
- 在aMCI/pAD和PD中的冷漠性涉及基于努力的决策参数的明显改变.
- 疾病特异的神经病理导致动机受损.
- 虽然疾病特异性因素至关重要,但理解冷漠的跨领域框架也很有价值.
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