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在前性痴呆症中,确定动机障碍和行为硬之间的联系
Kristina Horne1,2, Rebekah M Ahmed1,3,4, Olivier Piguet1,2
1The University of Sydney, Brain and Mind Centre, Sydney, New South Wales, Australia.
European journal of neurology
|November 7, 2023
概括
前性痴呆症 (FTD) 与冷漠和快乐减少有关. 这项研究发现,FTD中的行为刚性与这些动机变化有关,并且涉及前前大脑区域的退化.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 精神病学是一个精神病学.
背景情况:
- 前性痴呆症 (FTD) 通常表现为硬的行为,如强迫性的日常生活和仪式.
- 这些不灵活的行为矛盾地与显著的动机缺陷共存,包括冷漠和无情感.
- 在FTD中,动机变化和行为刚性之间的关系仍然未被探索.
研究的目的:
- 研究FTD患者的动机变化 (冷漠和无情) 和行为硬性之间的关联.
- 使用神经成像技术探索FTD行为刚性的神经相关性.
主要方法:
- 从71名FTD参与者 (语义性痴呆症[SD]和行为变体[bvFTD]) 收集了护理人员对冷漠,快乐的基调和行为变化的评分.
- 从行为数据中得出一个刚性指数.
- 全脑基于voxel的形态测量分析了刚性和灰质体积之间的关系.
主要成果:
- 在整体FTD组中,行为刚性与冷漠度严重程度 (r=0.57) 和降低享乐基调 (r=-0.36) 有显著的相关性.
- 在SD (r=-0.65) 中,低享乐基调预测了刚性,但在bvFTD (r=-0.18) 中没有,这表明了诊断特定的相互作用.
- 刚性与右侧前腹部区域的灰色物质退化有关,包括腹核.
结论:
- 这是第一个在FTD中建立动机缺陷和行为刚性之间的直接联系的研究.
- 研究结果表明,动机变化是FTD行为化的关键机制.
- 这些见解可以指导针对FTD患者管理不灵活行为的有针对性的干预措施的开发.
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