Psychologists have studied human perception, focusing on systems like vision and hearing, as well as others such as smell, taste, and balance. By creating perceptual illusions, scientists explore how ...Psychologists have studied human perception, focusing on systems like vision and hearing, as well as others such as smell, taste, and balance. By creating perceptual illusions, scientists explore how the brain interprets sensory information. These illusions, often used by artists to depict depth, demonstrate our ability to judge context rather than absolute qualities.