Clairvoyance and Synesthesia

The authors investigate clairvoyance, 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 pictures or colors when he hears sounds. In this report, the authors have sought to prove that synesthesia exists in clairvoyance, which may be a kind of sixth sense., Clairvoyance 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 of 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 clairvoyance.