Perception is a term designating the collection of information in the form of stimuli from the surroundings through the senses (sight, hearing, smell, taste, touch, kinesthesia, nociception and proprioception) and their transformation through the relevant parts of the CNS (particularly relevant sensory centers) to the upper floors of psyche (especially consciousness or unconsciousness).
Perception is not just information receiving, but it also includes its complex processing, transformation and modification at higher levels of the psyche (or CNS activities). For example, the perception may be related quite closely to attitudes by which it is affected. Perception is also closely related to attention.
Note: kinesthesia is the perception of motion and balance of the body; nociception is perception of pain, and proprioception is the perception of body position and muscle tension.
Perception is one of the key themes of cognitive psychology.