The person who is using a visual channel sees the message in his minds eye. He visualizes the information in order to understand it. On the other hand, if the person is using an auditory channel to process the information, he has to hear it in order to understand it. In essence, in his mind he hears the information, repeats it, or says it to himself in order to process it, remember it, and store it. This person is said to be using the auditory channel or representational system.
Some people use the kinesthetic channel to process information.
That is they process information through their guts or with their feelings. People using this kinesthetic channel have to touch an object to assess it and understand it. Most people are using either the auditory or visual representational systems to process information most of the time. An important point to remember here is that the person with whom we are communicating uses all three representational systems to process information at one time or another. What we are concerned with is what is the primary channel being used when we are trying to communicate with that person.