Perception is awareness, comprehension or an understanding of something of sub-process.

A simple perception of events would be recognizing the consequences of actions.

Physiological mechanisms such as listening, hearing, etc. play an active role in the sub-perception of individuals.

Types of  sub-process and perception are telepathy, clairvoyance, precognition, retro-cognition.

Perception has a complex and interactive nature since it is composed of several sub-processes.  The first important sub-process is the stimulus or situation that is present. Perception begins when a person is confronted with a stimulus or a situation. This confrontation may be with the immediate sensual stimulation or with the total physical and sociocultural environment.