Illusory Upward Self-Motion Results in a Decrease in Perceived Room Temperature
- 1 1Institute for Advanced Study, Kyushu University, Fukuoka, Japan 2Faculty of Design, Kyushu University, Fukuoka, Japan 3Research Center for Applied Perceptual Science, Kyushu University, Fukuoka, Japan
- 2 School of Applied Media and Social Sciences, Monash University, Melbourne, Australia
Abstract
Purpose : Stationary observers often experience illusory self-motion (vection) when they are exposed to large patterns of optic flow. The effect of different temperatures on the strength of vection was investigated. Method : Eleven participants were exposed to visual stimuli that induced illusory motion (up, down) in three room temperatures (26°C - 27°C, 21°C - 22°C, 5°C - 6°C). Participants rated (a) the vection magnitude, and (b) the room temperature (twice; before and after vection). Results : Upward vection was rated as stronger than downward vection in the 26°C - 27°C temperature. In addition, after experiencing upward and downward vection, subjective ratings of room temperature decreased and increased, respectively, when the room temperature was 26°C - 27°C. This effect was not observed when the room was 5°C - 6°C. Conclusion : These results suggest that a cross modal association exists between the direction “up” and 26°C - 27°C temperatures.
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