Induction field in vision means the psychological potential field that affects the appearance of a figure.We typically,measure the field using the upper limen of the method of limits.However,measurement results are unstable for lower luminance.We investigated the effect of negative- or positive-type images on the field by using the method of limits and measuring the upper and lower limen.We determined that negative- or positive-type images affect the field.We confirmed the effect of the induction field in vision on the lower limen,which suggests that the method of limits is required to measure the induction field in vision.
