Arao M, Suzuki M, Katayama J, Yagi A, 2012, "An odorant congruent with a colour cue is selectively perceived in an odour mixture" Perception 41(4) 474 – 482
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An odorant congruent with a colour cue is selectively perceived in an odour mixture
Mari Arao, Maya Suzuki, Jun’ich Katayama, Akihiro Yagi
Received 17 October 2011, in revised form 1 February 2012; published online 9 May 2012
Abstract. Odour identification can be influenced by colour cues. This study examined the mechanism underlying this colour context effect. We hypothesised that a specific odour component congruent with a colour would be selectively perceived in preference to another odour component in a binary odour mixture. We used a ratio estimation method under two colour conditions, a binary odour mixture (experiment 1) and single chemicals presented individually (experiment 2). Each colour was congruent with one of the odour components. Participants judged the perceived mixture ratio in each odour container on which a colour patch was pasted. An influence of colour was not observed when the odour stimulus did not contain the odour component congruent with the colour (experiment 2); however, the odour component congruent with the colour was perceived as more dominant when the odour stimulus did contain the colour-congruent odorant (experiment 1). This pattern indicates that a colour-congruent odour component is selectively perceived in an odour mixture. This finding suggests that colours can enhance the perceptual representation of the colour-associated component in an odour mixture.
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