特定任务的个性化theta tACS调节协会记忆中的theta动态
Busra Nur Kahraman1, Mevhibe Saricaoglu1,2, Lutfu Hanoglu1,3
1Research Institute for Health Sciences and Technologies (SABITA), Regenerative and Restorative Medicine Research Center (REMER), Clinical Electrophysiology, Neuroimaging and Neuromodulation Lab, Istanbul Medipol University, Istanbul, Turkey.
Brain and behavior
|February 17, 2026
概括
在左壁皮质上以个性化甲频率 (ITF) 进行的跨交替电流刺激 (tACS) 并没有显著改变识别性能. 然而,它确实调节了 teta 动态,这表明了个性化大脑刺激在记忆增强方面的潜力.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
背景情况:
- 关联性记忆依赖于泰达频段神经振荡和前垂体网络中的相互作用.
- 顶层皮质对于在关联性记忆检索过程中整合信息至关重要.
研究的目的:
- 调查应用到左侧皮质的个性化频率 (ITF) 的跨交替电流刺激 (tACS) 是否可以调节关联记忆性能.
- 探索ITF tACS在记忆编码和识别过程中对theta活动和半球主导的影响.
主要方法:
- 30名健康参与者被随机分配到tACS或假刺激组.
- 脑电图 (EEG) 用于在面部和场景任务 (FAST) 编码阶段确定每个参与者的ITF.
- ITF tACS应用于P3部位,随后进行识别任务,分析EEG和行为数据.
主要成果:
- 在tACS和虚假组之间没有发现识别性能的显著差异.
- tACS调节了theta动态,导致刺激组的右半球占主导地位,而假装组的左半球占主导地位.
- 刺激影响了编码和识别阶段之间的theta活动模式,影响了半球不对称性.
结论:
- 虽然直接的性能变化并不显著,但ITF tACS在关联记忆任务中调节了theta动态和半球不对称性.
- 个性化大脑刺激方法,如ITF tACS,显示出影响记忆处理的潜力,尽管对theta活动的影响很复杂.
- 需要进一步的研究来优化tACS参数以实现一致的记忆增强.
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