Abstract
The authors investigate chairvoyance, where subjects can non-visually perceive letters or figures written on a sheet of rolled up paper. The existence of "synesthesia, " a synchronized reaction among the five senses, is acknowledged in which, for example, someone sees picture or color when he hears sounds. In this report, the authors have sought to prove that synesthesia exists in chairvoyance, which may be a kind of sixth sense. Chairvoyance experiments were carried out on seven subjects using letters and figures which seemed to stimulate the sensation of hearing, taste, smell or touch for target samples. In a total twenty trials, there were two examples for which the first sensation was not visual, but hearing and smell. Although detected in only two examples, it was suggested that there exists a possibility of synesthesia in chairvoyance.
