1983 年 32 巻 1 号 p. 25-31
The effects of varying time intervals and frequency of preliminary stimulations shown in advance of movements upon the variations in the subsequent responses to exogenous stimulations have been evaluated on the basis of the reaction time. The following results have been obtained.
1. In the cases of simple preliminary reactions, if a time interval between the preliminary stimulations and the actual stimulations was less than 1000 msec, the reaction time was delayed more than the cases of the control reaction to simple stimulations. A relationship of index function was found out between the intervals of stimulations and the time of responses.
2. In the cases of persistent preliminary reactions, the shorter the intervals of stimulations, the shorter became the reaction time than that of the control reaction to the simple stimulation.
3. The so-called flying errors which are the movements induced before the actual stimulations were most frequently developed at an interval of stimulations of 1000 msec.
On the basis of the above findings of the reactions, the levels of excitements in the center (CNS) and peripheries could be assessed on the basis of the above findings of the reactions that reactions to a stimulation can be variable according to the other stimulations induced prior to the particular stimulation.