Abstract
Experimental studies were made, with the following results on the discrimination capacity of vibration frequencies in the case of vibration of the whole body. 1) The frequency difference △f (c.p.s.) the discriminated in the case of increasing was found to be smaller in the range of frequencies from 1 to 6 cycles per second and persisted down to the range from 0.79 to 0.05 c.p.s., △f of 10 cycles per second showed a sudden change of increase 10c.p.s, its value were from 1.82 to 2.80c.p.s. 2) In the case of decreasing frequencies, △f of the amount from 1 to 6 cycle per second was found to be smaller as well as the case of increasing frequencies. Above 10c.p.s., △f were from 1.17 to 2.61c.p.s.. 3) △f in the case of increasing frequencies was found to be greater than in that of decreasing. 4) △f/f at 1c.p.s. was found to be the maximum and the higher the frequency of vibration, the less △f/f. But, △f/f in the case of 10c.p.s. was larger than in the case of frequencies from 5 to 30c.p.s.. 5) In spite of the differnce of geometric components as well as of the amplitude, △f/f remained constant.
