Apparent Motion Signal Produced by Subjective Contours
Details
In the motion perception, real motion cannot be discriminated from apparent motion whose motion energy is not enough within the window of visibility in the spatiotemporal frequency domain. To perceive the apparent motion, it is necessary to solve the so-called "corresponding problem". In the corresponding problem, the corresponding stimuli between frames are generally defined by physical edges, such as luminance border in order to produce the motion energy. If this is the only corresponding information, the subjective contour could not figure out the corresponding problem. To understand this issue, we tested whether it is possible to perceive the motion using the stimuli defined by the subjective contours exclusively located between the frames. We found the same performance of the motion discrimination in the subjective contour stimuli as those in the real contour, indicating that the motion energy can be generated by not only physical but the subjective border.
