Perception is one of the oldest and most fundamental disciplines within Psychology, dating back to at least the time of the ancient Greeks. The goal of perception research is to understand how stimuli from the world interact with our sensory systems, forming visual, auditory, tactile, olfactory, and gustatory representations of the world. Research in perception and psychophysics is directed at discovering the lawful relations between environmental events and subjective experience. This area spans a wide range of problems extending from the structure and function of the sense organs, through the processing of sensory information, to the nature of subjective experience and the methods by which an accurate description of these experiences is obtained. As such, an understanding of perception is critical for all areas within Psychology. The modern study of perception is highly integrative, combining cognitive, behavioural, computational, developmental, and neuroscientific approaches.