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基于奖励的气味刺激评估影响了前额和部区域的功能连接:一个纵向EEG研究

Evangelos Sigalas, Manuel Seet, Jeremy Lin Weixuan

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|December 3, 2025

概括

反复接触愉快的气味可以产生刺激-奖励的关联,受气味的价值的影响. 脑电图 (EEG) 揭示了大脑频段中独特的神经模式,跟踪这些奖励评估.

科学领域:

神经科学是一个神经科学.
感官科学感官科学
心理学心理学心理学

背景情况:

嗅觉刺激强烈影响记忆,情绪和奖励通路.
之前的研究主要检查了神经对异味的反应,跨激发-价值维度.
有限的研究已经研究了纵向,奖励特定的嗅觉处理及其神经支.

研究的目的:

在重复暴露期间调查与奖励相关的嗅觉刺激处理的神经机制.
为了确定是否重复暴露于气味导致刺激-奖励关联.
评估电脑电图 (EEG) 在评估气味奖励价值方面的实用性.

主要方法:

参与者每天接受三次会议,接触到愉快的气味刺激,并表示重复偏好.
脑电图 (EEG) 记录了神经对反复出现的气味的反应.
功能连接分析和图形理论指标应用于EEG数据.

主要成果:

行为数据显示,重复暴露形成了刺激-奖励关联,由气味奖励值调节.
在贝塔 (β) 和玛 (γ) 频段中,在低奖励刺激和高奖励刺激之间观察到功能连接的显著差异.
这些神经差异,特别是在额头和部区域,与行为评估相关.

结论:

重复的嗅觉暴露可以建立刺激-奖励关联,受气味的享乐价值的影响.
脑电图分析,特别是β和γ频段的功能连接,可以可靠地追踪和区分嗅觉刺激的奖励值.
这项研究阐明了在重复暴露时嗅觉中潜在的奖励处理的神经机制.

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