在健康人群中,LSD和MDMA对条状皮质连接的分离效应
Natalie Ertl1,2,3, Imran Ashraf4, Lisa Azizi4
1Perceptive, Hammersmith Hospital, London, UK. n.ertl@imperial.ac.uk.
概括
Lysergic 酸二甲基胺 (LSD) 和 3,4-甲基二氧化甲胺 (MDMA) 改变了大脑的连接. 虽然这些药物不影响内部的条形状网络,但它们显著改变了条形状与其他大脑区域的连接方式,为其治疗潜力提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 心理药理学 心理药理学
- 脑部成像 脑部成像
背景情况:
- 像LSD和MDMA这样的精神活性药物显示出对成和PTSD的治疗承诺.
- 了解它们的神经机制,特别是在条纹体中,对于精神病学应用至关重要.
- 两功能障碍与各种精神健康障碍的病理生理学有关.
研究的目的:
- 调查急性MDMA和LSD给药对条纹功能连接的影响.
- 检查这些物质如何改变大脑网络内部和大脑网络之间的连接.
- 探索条纹体在这些精神活性药物的神经生物学影响中的作用.
主要方法:
- 利用来自两个独立研究的静止状态fMRI数据.
- 进行了种子-声功能连接性分析,使用三个条纹子区域 (关联性,边缘性,感觉运动) 作为种子.
- 分析了网络内部连接和整个大脑的种子到voxel连接.
主要成果:
- 无论是MDMA还是LSD都没有显著改变网络内部的条形连接.
- 这两种药物都显著改变了与其他大脑区域的条纹连接.
- MDMA降低了边缘条纹体-杏仁体的连接性;LSD增加了与前额,感觉运动和视觉皮层的关联性条纹体连接性.
结论:
- 急性MDMA和LSD的使用差异调节条状功能连接.
- 观察到的变化,特别是在正规条纹网络之外,表明大脑网络组织发生了变化.
- 这些发现有助于了解LSD和MDMA潜在治疗作用的神经生物学基础.
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