Experience Informs Consummatory Choices for Congruent and Incongruent Odor-Taste Mixtures in Rats.
Experience Informs Consummatory Choices for Congruent and Incongruent Odor-Taste Mixtures in Rats.
复制标题
经验告诉老鼠对一致和不一致的气味-味道混合物的完美选择。
DOI：
10.1093/chemse/bjaa025
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发表时间：
2020
期刊：
影响因子：
3.5
通讯作者：
Samuelsen,ChadL
中科院分区：
文献类型：
--
作者：
McQueen,KelseyA;Fredericksen,KellyE;Samuelsen,ChadL
经验是决定食物选择的重要因素。吃食物会产生持久的气味-味道关联，将气味与味道的质量和享乐价值（愉快/不愉快）联系起来，并产生一致的气味-味道组合的感知。先前的人类心理物理学实验表明，气味-味道混合物的经验塑造了与化学感觉刺激的强度、熟悉度和愉悦度相关的感知判断。然而，这些知觉判断如何告知消费选择是不太清楚的。使用大鼠作为模型系统和2瓶的气味访问任务，我们研究了如何与可口和不可口的气味-味道混合物的经验影响相关的气味-味道一致性和刺激熟悉性的消费选择。我们发现，气味和味道之间的关联，而不是气味的身份或其与味道的一致性，通知消费选择的气味-味道混合物。此外，我们发现，气味和味道之间的关联，而不是气味新恐惧症，通知消费选择溶解在水中的气味。我们的研究结果提供了进一步的证据，气味和味道之间的关联，气味-味道混合物的经验，是一个基本的功能指导消费选择。
Experience is an essential factor informing food choice. Eating food generates enduring odor–taste associations that link an odor with a taste’s quality and hedonic value (pleasantness/unpleasantness) and creates the perception of a congruent odor–taste combination. Previous human psychophysical experiments demonstrate that experience with odor–taste mixtures shapes perceptual judgments related to the intensity, familiarity, and pleasantness of chemosensory stimuli. However, how these perceptual judgments inform consummatory choice is less clear. Using rats as a model system and a 2-bottle brief-access task, we investigated how experience with palatable and unpalatable odor–taste mixtures influences consummatory choice related to odor–taste congruence and stimulus familiarity. We found that the association between an odor and a taste, not the odor’s identity or its congruence with a taste, informs consummatory choice for odor–taste mixtures. Furthermore, we showed that the association between an odor and a taste, not odor neophobia, informs consummatory choice for odors dissolved in water. Our results provide further evidence that the association between an odor and a taste, after odor–taste mixture experience, is a fundamental feature guiding consummatory choice.