通过皮肤进行的耳膜迷走神经刺激可以减轻警觉丧失吗? 检查个性化与恒定电流强度的刺激的影响
Fernando G Luna1,2, Juan Lupiáñez3, Stefanie König4
1Institute of Psychology, University of Greifswald, Greifswald, Germany.
Psychophysiology
|August 22, 2024
概括
通过皮肤进行的耳膜迷走神经刺激 (taVNS) 并没有改善警觉性能,但确实减轻了皮质醇的减少. 需要进一步的研究来探讨taVNS对持续注意力和位置 - 上腺素系统的影响.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 人体生理学 人体生理学
背景情况:
- - - 北上腺素 (LC-NE) 系统对于持续的注意力和警至关重要,它调节生理兴奋.
- 通过皮肤进行耳道迷走神经刺激 (taVNS) 是一种非侵入性方法,可以调节LC-NE活动,但其对警觉的影响尚未研究.
研究的目的:
- 调查taVNS是否可以在长时间的任务中防止警觉性下降.
- 为了确定taVNS是否调节LC-NE活动的间接生理标志物,如唾液α-amylase和皮质醇.
主要方法:
- 50名参与者接受了三次随机的个人化活跃taVNS,固定强度活跃taVNS (0.5mA) 或假装taVNS.
- 使用注意力和警任务 (ANTI-Vea) 评估了警.
- 唾液α-氨酶和皮质醇水平被测量为LC-NE活动的间接标志物.
主要成果:
- 与假刺激相比,活跃的taVNS没有显著调节观察到的警觉下降.
- 随着时间的推移,观察到活跃taVNS的皮质醇降低的缓解.
- 相关性分析表明taVNS对LC-NE标记物的个体间影响,在活性刺激期间唾液α-amylase和皮质醇变化之间存在积极的关联.
结论:
- 在本研究中,taVNS没有提高警性能.
- 活跃的taVNS对缓解皮质醇降低和影响LC-NE标志物的个体间变异性产生了潜在的影响.
- 建议进一步研究各种刺激参数和其他LC-NE标志物,以澄清taVNS在警和注意力中的作用.
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