Cognitive illusions arise from interaction of perceived reality with assumptions about the world (prior knowledge), leading to "unconscious inferences". Cognitive illusions rely on stored knowledge about the world (depth, rabbits, women) and are also under some degree of conscious control (we can generally reverse the perception at will). The way you look at an object can … [Read more...]
Physiological Illusions
Physiological illusions, such as the afterimages following bright lights or adapting stimuli of excessively longer alternating patterns (contingent perceptual aftereffect, CAE), are the effects on the eyes or brain of excessive stimulation of a specific type - brightness, tilt, colour, movement, and so on. The theory is that stimuli have individual dedicated neural paths in the … [Read more...]