SPLTRAK Abstract Submission
High familiarity and intensity accelerate odor detection
Tatsu Kobayakawa1, Hiroko Mochizuki-Kawai2, Takefumi Kobayashi3, Naomi Gotow1
1National Institute of Advanced industrial science and technology, Tsukuba, Japan
2Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization, Tsukuba, Japan
3Bunkyo University, Department of Human Studies, Saitama, Japan

In visual perception, it is known that higher familiarity for a certain stimulus leads quicker detection. Odor perception, however, it is still uncovered the relationship between familiarity for odor stimulus and speed of detection, yet. In this study, we measured simple detection time for four olfactory stimuli, rose, anis, vanilla and mint. Participant took part in four experimental sessions (one session for one odorant), after each session, we asked familiarity, intensity, pleasantness and edibility for each odorant. To measure reaction time properly, we monitored the odor material at the end of tube of the olfactometer (near the nose of subject) by using a high-speed gas sensor. We presented thirty trials in one session, and ISI was approximately forty seconds. We defined high and low familiarity groups for each odorant, and compared reaction time, perceived intensity, pleasantness and edibility, and found significant difference between detection time and perceived intensity. These results suggested familiarity and perceived intensity would affect detection time for odorant.