• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Frontiers in Human Neuroscience >Pleasant and Unpleasant Odors Influence Hedonic Evaluations of Human Faces: An Event-Related Potential Study
【2h】

Pleasant and Unpleasant Odors Influence Hedonic Evaluations of Human Faces: An Event-Related Potential Study

机译：令人愉悦和不愉快的气味影响人脸的享乐主义评价：与事件相关的潜在研究

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Odors can alter hedonic evaluations of human faces, but the neural mechanisms of such effects are poorly understood. The present study aimed to analyze the neural underpinning of odor-induced changes in evaluations of human faces in an odor-priming paradigm, using event-related potentials (ERPs). Healthy, young participants (N = 20) rated neutral faces presented after a 3 s pulse of a pleasant odor (jasmine), unpleasant odor (methylmercaptan), or no-odor control (clean air). Neutral faces presented in the pleasant odor condition were rated more pleasant than the same faces presented in the no-odor control condition, which in turn were rated more pleasant than faces in the unpleasant odor condition. Analysis of face-related potentials revealed four clusters of electrodes significantly affected by odor condition at specific time points during long-latency epochs (600−950 ms). In the 620−640 ms interval, two scalp-time clusters showed greater negative potential in the right parietal electrodes in response to faces in the pleasant odor condition, compared to those in the no-odor and unpleasant odor conditions. At 926 ms, face-related potentials showed greater positivity in response to faces in the pleasant and unpleasant odor conditions at the left and right lateral frontal-temporal electrodes, respectively. Our data shows that odor-induced shifts in evaluations of faces were associated with amplitude changes in the late (>600) and ultra-late (>900 ms) latency epochs. The observed amplitude changes during the ultra-late epoch are consistent with a left/right hemisphere bias towards pleasant/unpleasant odor effects. Odors alter evaluations of human faces, even when there is a temporal lag between presentation of odors and faces. Our results provide an initial understanding of the neural mechanisms underlying effects of odors on hedonic evaluations.
机译：气味可以改变对人脸的享乐主义评价，但是对这种作用的神经机制了解甚少。本研究旨在使用事件相关电位（ERP）分析气味引发范例中人脸诱导评估中气味引起的变化的神经基础。健康，年轻的参与者（N = 20）对愉悦的气味（茉莉花），难闻的气味（甲基硫醇）或无味控制（清洁空气）脉冲3 s后出现的中性面部评级为中性。在愉快气味条件下呈现的中性面孔被评定为比在无气味控制条件下呈现的相同面孔更令人愉悦，而在无气味控制条件下呈现的中性面孔则被归类为在令人不愉快的气味条件下呈现出更加愉悦的面孔。脸部相关电位的分析显示，在长等待时间（600-950毫秒）的特定时间点，四簇电极受气味条件的影响很大。在620-640 ms的间隔中，与在无味和不愉快的气味条件下的响应相比，响应于令人愉快的气味条件下的脸部，两个头皮时间簇在右侧顶电极中显示出更大的负电位。在926 ms处，与面部相关的电位分别显示出正面和正面的响应，分别对应于左右外侧额颞电极在愉快和不愉快的气味条件下的面部表情。我们的数据表明，在评估面部时，由气味引起的变化与后期（> 600）和超晚期（> 900ms）潜伏期的振幅变化相关。在超晚期期间观察到的振幅变化与向左/向右半球偏向于令人愉悦/不愉快的气味效果一致。气味会改变对人脸的评估，即使气味和脸部呈现之间存在时间上的滞后。我们的结果提供了对享乐评估中气味影响的神经机制的初步理解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号