嗅觉训练可以选择性地改变健康成年人对气味的皮质反应
Michal Pieniak1,2, Yiling Mai1, Coralie Mignot1
1Smell & Taste Clinic, Department of Otorhinolaryngology, Faculty of Medicine Carl Gustav Carus, Technische Universitat Dresden, Fetscherstraße 74, 01307, Dresden, Germany.
Cerebral cortex (New York, N.Y. : 1991)
|February 10, 2026
概括
嗅觉训练 (OT) 通过改变大脑对特定气味的反应来增强嗅觉. 这项研究发现,在健康的成年人中,OT减少了大脑对气 (乙醇) 的反应时间.
科学领域:
- 神经科学是一个神经科学.
- 嗅觉研究 嗅觉研究
- 感官处理 感官处理
背景情况:
- 嗅觉训练 (OT) 被认为可以改善嗅觉功能障碍.
- 通过OT增强嗅觉,特别是皮质处理的精确机制尚未完全理解.
- 研究OT对大脑活动的影响对于理解嗅觉康复至关重要.
研究的目的:
- 研究嗅觉训练 (OT) 对健康年轻人对气味的皮质反应的影响.
- 确定OT是否会诱导与嗅觉相关的大脑电活动的可测量变化.
- 探索OT对大脑中气味处理的影响的特异性.
主要方法:
- 94名健康的成年人参与了这项研究,随机分配给具有特定气味的OT或安慰剂.
- 用检测值和气味识别来评估嗅觉功能.
- 在12周的训练之前和之后,使用脑电图 (EEG) 记录了与化学感官事件相关的潜力 (CSERP).
主要成果:
- 接受OT的参与者在CSERP组件 (P1,N1,P2) 中的延迟时间显著缩短,以应对PEA.
- 在OT组中,没有观察到硫化 (H2S) 或二氧化碳 (CO2) 刺激时延迟的显著变化.
- 假药组对任何测试的气味剂的CSERP延迟没有变化.
结论:
- 嗅觉训练会诱导健康成年人皮质处理气味的特定气味变化.
- 这些发现表明,OT可以提高特定气味的神经处理速度.
- 这项研究提供了在嗅觉皮层中OT诱导的神经可塑性的证据.
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