Communication is important for each human being. By communicating with others you learn to define your own personality and your place in the world. Communication helps you to understand who your are and what you are, it connects you to the world around you and to your inner self. If normal communication with a person isn't possible because of a variety of reasons, Sensory Integration may be indicated.
Communication is partly a physiological process and partly a psychological process.
The physiological process has to do with the functioning of your senses and the neurological effect when perceive stimuli. The psychological process has to do with the meaning you have learned to give to stimuli and the way you interpret new stimuli. Normally we use all our senses for communication. We can focus on the stimuli we want to focus on, we can deal with combinations of stimuli and we are able to distinguish between contradictory stimuli like when a person says that he is happy while his face looks like crying. If one or two of our senses aren't functioning well because of a physiological problem, we usually are able to compensate the problem by using the remaining senses.