Estimation of Receiver's Discriminability Index in Remote Action against Human

For several years, the authors have been studying remote action in physiological responses and time differences between motion times of sending and receiving. Here, the Receiver's discriminability index d' was estimated by the signal detection theory. The Receiver judged the existence of the sending signal every 10-second trial. 1280 trials were done by 4 subjects (3 males, 1 females) who were veteran practitioners of martial arts. Total hits were 668 trials (p=0.0588, one tailed) and the average of the Receivers' discriminability indexes d' was 0.092 and its 95% confidence interval was [0.167, 0.016]. Discrimination of the signal existence in remote action was more difficult that in usual sensory stimuli experiments.