[Study of differential sensitivity to changes in the duration of tonal sounds]

Temporal differentiation by man was studied for intervals from 50 to 700 msec my means of the traditional method of constant stimulus differences (AX) and combinations of AX with methods of multiplication by two and three (AB-2 and AB-3). The linear augmentation of differential limen as function of duration was noted. The limens in methods AB were significantly higher than in the method AX. The values of limens were influenced upon by methods of multiplication, form of psychometric functions, individual features of subjects. No systematic changes of limens during training sessions were found.