Volume 5 (1963) Issue 2 Pages 63-71
The purpose of the present study is to measure the field-force of visually perceived figures through a new phenomenon that has never been used.
With the brief presentation of a small light point (test-point) around a figure, the test-point appears to move swiftly away from the figure and back to it.
To measure the amount of this apparent movement, the scale-point was presented on the opposite side to the figure, and its luminous intensity to counteract the movement was measured. Results indicate that, (1) the amount of movement decreases with the distance from the figure to the test-point, (2) it increases according as the luminous intensity of the figure increases, and (3) these results are noticed commonly both in solid and contour figures. These tendencies are exceedingly akin to those obtained by the light-threshold method. The method used seems as one of the most promising in constructing the field of figures, since the movement includes both the direction and the amount as its phenomenal properties.