Perception

         Perception involves the organisation and interpretation of sensory data in order to
make it meaningful, discarding non-relevant data, i.e. transforming data into
information. Perception is a highly sophisticated mechanism and requires existing
knowledge and experience to know what data to keep and what to discard, and how
to associate the data in a meaningful manner.
       Perception can be defined as the process of assembling sensations into a useable mental representation of the world. Perception creates faces, melodies, works of art, illusions, etc. out of the raw material of sensation.

       Decision making is the generation of alternative courses of action based on available
information, knowledge, prior experience, expectation, context, goals, etc. and selecting
one preferred option. 
       Decision making is also described as thinking, problem solving and judgement.
       Good decisions are based on knowledge supplemented by written information and procedures, analysis of observed symptoms, performance indications, etc.
       Senses receive feedback of decision  and its result. This helps to improve knowledge and refine future judgement by learning from experience.

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