Our findings point to an odorant-visual object congruency effect. On-going nasal exposure to congruent aromas enhances search performance of visual targets presented among distractors. The size of the congruency effect depends on the baseline performance level in individual participants when they were tested without the presence of an odorant. Our results suggest that our olfactory sense influences the saliency of a visual target presented among distractors. Such multisensory effects could influence our food choices during everyday grocery-shopping decisions.
The figure depicts a typical trial where the participant is exposed to the scent of a fruit (e.g., a lemon) and shortly thereafter is cued to search for a lemon among a circular array of fruits. The correct response is given by moving the cursor to the placeholder where the target was located.
For more details, see the Open Access publication in Scientific Reports: