Metaphorical representation modulates the weight-embodiment effect: Evidence from behavioral- and event-related-potential-based experiments

In this study, the representation of sensation experiences was manipulated to investigate the effect of cognition on the embodiment process. Participants used two computer mouse devices (one heavy and one light) to categorize currency words in terms of value. The default “weight-importance” association (Experiment 1) and a manipulated “weight-encumbrance” association (Experiment 2) were applied to examine the modulation effect of metaphorical representation on weight embodiment. In the traditional association, a larger late positive component (LPC) and faster RTs were found when participants responded to high-value currency words with the heavy mouse and to low-value currency words with the light mouse (congruent condition) when compared to the reversed (incongruent) stimuli-response condition. In the manipulated association, a larger LPC around the central-parietal areas was found in the incongruent condition than in the congruent condition. These results suggest that the metaphorical representation of weight modulates the weight-embodiment effect.