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当遗传学占上风时:大脑刺激未能克服由大脑衍生的神经营养因子Val66Met引起的学习缺陷

Perianen Ramasawmy¹, Krisztián Iszak¹, Steffen Brüshaber^1,2

¹Non-Invasive Brain Stimulation Lab, Department of Neurology, University Medical Center Göttingen, Georg-August University, Göttingen, Germany.

Clinical neurophysiology practice

|September 22, 2025

概括

大脑衍生神经营养因子 (BDNF) 基因变异影响记忆分类. 超直流刺激 (tDCS) 并没有提高表现,但改变了任务效果,突出了对基因型特定认知增强策略的需求.

科学领域:

认知神经科学认知神经科学
神经遗传学神经遗传学
大脑刺激大脑刺激

背景情况:

背侧前额皮质 (DLPFC) 在记忆分类中起着至关重要的作用.
大脑衍生神经营养因子 (BDNF) Val66Met多态性影响神经元可塑性和认知功能.
研究DLPFC跨直流刺激 (tDCS) 对分类的影响以及BDNF基因型的调节作用.

研究的目的:

为了确定DLPFC-tDCS是否影响分类性能.
检查BDNF基因型是否调节DLPFC-tDCS对分类的影响.
在类别学习中探索遗传倾向和非侵入性脑刺激之间的相互作用.

主要方法:

在原型扭曲任务训练期间,62名健康参与者接受了10分钟的阳极右DLPFC-tDCS或假tDCS.
分类表现在刺激期间,之后立即,以及刺激后的第二天早上进行了评估.
通过基因定型评估评估了BDNF Val66Met多态状态.

主要成果:

与Val/Val同胞相比,具有Val66Met多态的个体表现出明显较差的分类能力 (p < 0.0001).
在测试的参数下,tDCS没有提高整体分类性能或减轻基因型相关差异.
然而,tDCS有效地消除了通常在这个分类任务中观察到的原型效应.

结论:

BDNF Val66Met的多态性是影响类别学习的重要因素.
低强度 (1 mA) 阳极右侧DLPFC-tDCS并不能提高分类性能或克服性能中的遗传变异.
未来的研究应该专注于完善用于基因型特定认知增强的tDCS协议.

关键词:

这就是为什么BDNF是BDNF.Val66MetMet的价值是什么意思认知增强认知增强认知增强 tDCSCS 是一个很好的方法.通过体刺激来进行跨体刺激.

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