Figure 1

(a) Top left: Mean localisation rating (and standard error (SE)) for an odour alone and for the odour with the irritant glacial acetic acid (GAA) added when water as well as weak and strong concentrations of sucrose serve as the mouth stimuli. (b) Top right: Mean localisation rating (and SE) for a weak and strong odour (same odour with different concentrations) when water and sucrose serve as the mouth stimuli. (c) Bottom left: Mean localisation, discrimination d' and recognition d' scores (and SE), for participants demonstrating lesser or greater degrees of oral localisation. (d) Bottom right: Mean localisation and naming score (number correct/8 and SE) for participants demonstrating lesser or greater degrees of oral localisation.