长期轻度创伤性脑损伤的老年青少年的跨直流刺激:临床和功能连接的案例研究
Michelle Eliason1, Elizabeth Castro2, Elizabeth Fonfara3
1Brain Function and Recovery Lab, Rehabilitation Sciences, University at Buffalo, Buffalo, NY, United States.
Research square
|December 3, 2025
概括
这项研究表明,跨直流刺激 (tDCS) 在患有慢性脑震荡后症状的青少年中改变了脑干连接. 研究结果表明,tDCS可能在轻度创伤性脑损伤 (mTBI) 后调节神经回路.
科学领域:
- 神经科学是一个神经科学.
- 神经调节是一种神经调节.
- 神经成像是一种神经成像.
背景情况:
- 青少年轻度创伤性脑损伤 (mTBI) 可能导致慢性脑震荡后症状,包括抑郁和焦虑.
- 在前额前脑干网络的长期中断观察到有多次mTBIs病史的个体.
- 目前对于在mTBI后青少年中对这些特定脑网络的神经调节效应的理解是有限的.
研究的目的:
- 记录在休息状态下功能性MRI连接在脊侧前额皮层 (DLPFC) 和脑干之间在跨直流刺激 (tDCS) 之前和之后的变化.
- 为了研究非侵入性神经调节的潜力,改变皮质-脑干连接在一个青少年慢性脑震荡后症状.
- 为青少年残留症状的mTBI治疗策略提供信息.
主要方法:
- 一个案例研究涉及一个19岁的女性,有三个mTBIs的病史和持续的mTBI后症状.
- 进行了基线休息状态功能性MRI和行为测试.
- 经直流刺激 (tDCS) 进行了 (1.5mA,20分钟,每周两次,持续五周) 用阳极覆盖左侧DLPFC,用阴极覆盖对侧上视圈区域.
主要成果:
- 基线MRI显示DLPFC和脑干细胞核之间存在严重的低连接性 (pontine网状形成,raphe细胞核,黑色物质).
- tDCS后的成像显示了极性逆转和DLPFC与脑干激发核之间的连接性增加 (例如,近水管灰色,庞丁网状形成).
- 在血清激素和多巴胺激素核中观察到持续的低连接性;临床结果包括抑郁症的适度改善,但增加了焦虑和脑震荡症状负担.
结论:
- 青少年的mTBI可以导致前额前脑干网络的持久破坏.
- tDCS 证明了快速调节这些神经回路的能力,具有潜在的修复性和放松调节效应.
- 个性化的tDCS组装设计,密切的临床监测和纵向跟踪对于mTBI后康复至关重要.
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