is a form of masking an object which the perception of one object (the target) is altered by the application of another object (the mask). For example, a large circle is placed but only a small dot is seen due to a ring covering the larger circle.
METACONTRAST: “The process of a meta-contrast ensures that an object is hidden by a mask. For example, a large circle is placed but only a small dot is seen due to a ring covering the larger circle. “