Perception is the process by which an entity receives a signal from some sensory system, for example sight or hearing, and generates an internal representation of what is being perceived and then consciously experiences it (
Prinz, 2006). However, what the brain perceives may be different to what is really there – what some have defined as an ‘internal external-reality’ (
Lilly, 2010). Such perception effects may range from simple visual illusions to making mistaken assumptions about people. This process of perception is initially a subconscious one, until followed by a more conscious attention process where the brain focuses on the most interesting pieces of information.
Some classic examples of tricks of visual perception are given at:
(see VividVision for details)
