Brain Wave Coherence Function in Remote Action Experiments - Rank Sum Test vs. Welch’s Test

The sender of a martial art expert pair attempted to send qi to the receiver in a sensoryshielded state under randomized and blind conditions. The receiver's electroencephalograms were treated by Fast Fourier Transform and used for coherence function. Coherence function indicates the correlation between measurements of brain waves obtained with two electrodes. Correlations of C3:C4, Fz:Pz and O1:O2 were examined. Some pairs of coherence function groups for different conditions were examined by the rank sum test and Welch’s test. A statistically significant difference has been previously observed in the ¶-wave amplitude between the sending and non-sending time zones by Welch’s test. This ¶-wave amplitude between two different time zones was rank sum tested. The probability that the O1:O2 coherence function group in the sending time and the group in the resting time had the same distribution was under 5% by both rank sum and Welch’s tests. The ¶-wave amplitude at C4 was also 0.5% significant by the rank sum test. The practical conclusion is that the result by the rank sum test is similar to that of Welch's test.