Comparison of models of odor interaction
Comparison of models of odor interaction
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DOI：
10.1093/chemse/20.6.625
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发表时间：
1995-12-01
期刊：
影响因子：
3.5
通讯作者：
deWijk, RA
中科院分区：
文献类型：
--
作者：
Cain, WS;Schiet, FT;deWijk, RA
受试者对桉叶素、香叶醇、水杨酸己酯和乙酸芳樟酯的气味浓度的总体感知强度进行了评级，这些气味单独闻起来和混合在一起。受试者还评估了特定成分的强度(例如，桉叶素中的桉油量，以及桉树素和乙酸芳樟酯的混合物中的桉油量)。较强成分的强度本身就提供了对感知强度的近距离描述。除了较强的成分模型，另外两个心理模型(向量和U模型)和两个心理物理模型(UPLZ和Equiratio混合模型)提供了从一般到非常好的描述。心理模型给出了更好的拟合，但缺乏解释力。一些结果表明，较弱的气味比较强的气味增加的效果更强，这一结果与这些模型不相容。基于单个成分的可加性的心理物理模型通常高估了感知强度。对个体品质的判断只会给对气味掩蔽性或掩蔽性差异的预期带来轻微的鼓励。这些结果强调了测试关于人们如何感知混合物的特定关键假设的必要性。
Subjects rated the overall perceived intensity of concentrations of the odorants cineole, geraniol, hexyl salicylate, and linalyl acetate smelled alone and in binary mixtures. The subjects also rated intensity of specified constituents (e.g. amount of cineole in cineole, and in mixtures of cineole and linalyl acetate). The intensity of the stronger component alone offered a close description of perceived intensity. In addition to the Stronger Component model, two other psychological models (Vector and U model) and two psychophysical models (UPLZ and Equiratio Mixture model) offered descriptions ranging from fair to very good. Psychological models gave better fits, but lack explanatory power. Some results indicated that weaker odors add more potently than stronger odors, an outcome incompatible with these models. The psychophysical models, based on the additivity of single components, generally overestimated perceived intensity. Judgments of individual qualities gave only slight encouragement to any expectation of differences in masking or maskability among odorants. The results highlight the need to test particular critical hypotheses regarding how people perceive mixtures.