人类的嗅觉感知在单次嗅闻中体现了精细的时间分辨率

IF 21.4 1区 心理学 Q1 MULTIDISCIPLINARY SCIENCES
Yuli Wu, Kepu Chen, Chen Xing, Meihe Huang, Kai Zhao, Wen Zhou
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引用次数: 0

摘要

人的嗅觉通常持续一到三秒钟,通常被认为是对化学环境的一次长时间曝光,它设定了嗅觉感知的时间极限。为了打破这一限制,我们设计了一种嗅觉触发装置,可以控制嗅觉中气味的传递,精确度可达 18 毫秒。利用这种装置,我们通过对 229 名参与者(649 次)进行严格的心理物理测试表明,当刺激开始的不同步时间仅为 60 毫秒(Cohen's d = 0.48;95% 置信区间,(55, 59);120 毫秒的差异)时,按一种顺序呈现的两种气味及其相反顺序呈现的两种气味在知觉上是可分辨的。辨别能力随着刺激开始不同步时间的延长而提高,并且与嗅闻气味的时间顺序或嗅闻中积累的气味分子的相对数量等显性知识无关。我们的研究结果表明,人类的嗅觉感知对单次嗅闻中的化学动态很敏感,并为气味特征的时间代码提供了行为证据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Human olfactory perception embeds fine temporal resolution within a single sniff

Human olfactory perception embeds fine temporal resolution within a single sniff

Human olfactory perception embeds fine temporal resolution within a single sniff
A sniff in humans typically lasts one to three seconds and is commonly considered to produce a long-exposure shot of the chemical environment that sets the temporal limit of olfactory perception. To break this limit, we devised a sniff-triggered apparatus that controls odorant deliveries within a sniff with a precision of 18 milliseconds. Using this apparatus, we show through rigorous psychophysical testing of 229 participants (649 sessions) that two odorants presented in one order and its reverse become perceptually discriminable when the stimulus onset asynchrony is merely 60 milliseconds (Cohen’s d = 0.48; 95% confidence interval, (55, 59); 120-millisecond difference). Discrimination performance improves with the length of stimulus onset asynchrony and is independent of explicit knowledge of the temporal order of odorants or the relative amount of odorant molecules accumulated in a sniff. Our findings demonstrate that human olfactory perception is sensitive to chemical dynamics within a single sniff and provide behavioural evidence for a temporal code of odour identity. Olfaction has traditionally been considered a slow sense. Using a precise sniff-triggered apparatus, Wu et al. show that people can distinguish fine odour dynamics, with a temporal sensitivity within 120 milliseconds—or well within a single sniff.
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来源期刊
Nature Human Behaviour
Nature Human Behaviour Psychology-Social Psychology
CiteScore
36.80
自引率
1.00%
发文量
227
期刊介绍: Nature Human Behaviour is a journal that focuses on publishing research of outstanding significance into any aspect of human behavior.The research can cover various areas such as psychological, biological, and social bases of human behavior.It also includes the study of origins, development, and disorders related to human behavior.The primary aim of the journal is to increase the visibility of research in the field and enhance its societal reach and impact.
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