持续的透皮耳耳神经神经刺激增加了多种感官模式的长时间延迟神经处理
Valentina Jelinčić1, Martina D'Agostini1,2, Carlos Ventura-Bort3
1Research Group Health Psychology, Department of Psychology, KU Leuven, Leuven, Belgium.
Psychophysiology
|March 25, 2025
概括
通过皮肤进行的耳道迷走神经刺激 (taVNS) 增加了自我报告的兴奋和听觉/体感P2反应. 然而,taVNS没有影响神经门或诺亚上腺体标记物,这表明目前基于EEG的研究存在局限性.
科学领域:
- 神经科学是一个神经科学.
- 心理生理学 心理生理学
- 非侵袭性神经调节是一种非侵袭性神经调节.
背景情况:
- 通过皮肤进行耳道迷走神经刺激 (taVNS) 是一种非侵入性方法,针对迷走神经 afferent 纤维,在神经和精神健康障碍中具有潜在的应用.
- 拟议的机制涉及激活coeruleus位置 (LC) 和随后的noradrenergic激活 (NA),增强兴奋和注意力,尽管证据仍然混杂.
- 关于taVNS对不同感官模式的影响及其对特定神经标记物的影响的研究有限.
研究的目的:
- 调查连续taVNS是否增强了听觉,呼吸和体感模式的诺亚上腺激活 (NA) 标志物和神经处理.
- 检查taVNS对唤起潜能,神经门,唾液α-氨酶 (sAA) 和静止状态EEGα功率的影响.
- 评估taVNS对主观兴奋,刺激强度和不愉快感的影响.
主要方法:
- 这是一项为期两天的假控制交叉研究,涉及45名健康成年人.
- 参与者接受了taVNS (cymba concha) 或假刺激 (耳皮),同时进行听觉,呼吸和体感任务,并同时进行EEG记录.
- 测量包括唾液α-氨酶 (sAA),主观兴奋评级,静止状态EEGα功率和与事件相关的潜力 (P50,N1,P2) 进行神经门评估.
主要成果:
- 与假的相比,taVNS期间自我报告的兴奋显著增加.
- 在taVNS期间,听觉和体感觉唤起的潜能中的P2组件幅度得到了增强.
- 没有观察到对神经门 (S2-S1差异),sAA水平,静止状态α功率或主观刺激强度/不愉快度的显著影响.
结论:
- 持续的taVNS可以在听觉和体感处理中增强主观兴奋和特定的神经反应 (P2组件).
- 该研究没有通过sAA或静止状态α功率等标准标记物找到支持LC-NA假设的证据.
- 突出了taVNS与EEG结合的局限性,强调了对taVNS机制的进一步研究的需要.
相关概念视频
Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Somatosensation
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...
Hebbian LTP
LTP can occur when presynaptic neurons...
Desensitization and Tachyphylaxis
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
Several...
Several...


