A new method for comparing orthonasal and retronasal olfaction

被引：104

作者：

Heilmann, S ^{[1
]}

Hummel, T ^{[1
]}

机构：

[1] Univ Dresden, Sch Med, Dept Otorhinolaryngol, Smell & Taste Clin, D-01307 Dresden, Germany

来源：

BEHAVIORAL NEUROSCIENCE | 2004年 / 118卷 / 02期

关键词：

D O I：

10.1037/0735-7044.118.2.412

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

Odors seem to be perceived differently when presented ortho- or retronasally. In this study, stimuli of controlled concentration and duration were applied in either the anterior nasal cavity or epipharynx by means of air-dilution olfactometry. Stimulus concentration was monitored in the olfactory cleft. In Experiment 1, odor thresholds to a food (chocolate) and a nonfood (lavender) odor were lower for orthonasal, compared with retronasal, stimulation. In Experiment 2, intensity ratings to suprathreshold odor concentrations were significantly higher for orthonasal than for retronasal stimulation with hydrogen sulfide, but not phenyl ethyl alcohol. Accordingly, amplitudes and latencies of olfactory event-related potentials to retronasal stimuli were found to be smaller and prolonged, respectively. This indicates differential processing of olfactory stimuli presented through the retronasal or orthonasal routes.

引用

页码：412 / 419

页数：8

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