The discussion of crucial problems of psychophysiology and natural sciences is presented, in general: are there any recurrences of measured values of psychophysiological parameters (functions) of a person. It is shown that it is impossible to obtain arbitrarily a repetition of samples for tremor and electromyogram (when trying to maintain static muscular tension), statistical distribution function of samples f(x) is continuously changing. This dynamics is typical for tremor (conditionally involuntary movement) and electromyogram when the higher nervous activity of individual oversees the muscular effort. The involuntary movement (tremor) shows the number of coincidence of electromyogram samples (at unrestricted muscular tension) k, which is similar to such in the matrices of pairwise comparisons of tremor samples. Shannon’s entropy in this case does not change significantly.