The effects of differences in amounts of colouring on the relative intensity perception of acid tastes

Abstract

The problem of sensory interaction centres on the modification of responses mediated by one sensory modality through collateral stimulation in another modality. This thesis deals specifically with the effect of differences in relative amounts of colour upon taste intensity responses. The experiments in this thesis relate to the following questions: 1. Will differences in relative amounts of colour in solutions judged perturb taste intensity responses? 2. What variables in the situation determine the occurrence and the direction of this effect?