Sensory integration focuses primarily on three basic senses--tactile, vestibular, and proprioceptive. Their interconnections start forming before birth and continue to develop as the person matures and interacts with his/her environment.
The tactile senses are re-educated by collecting several items of different textures; soft to rough. Then begining with the soft texture (like wool) stroking the palms, back of the hands, forearms, arms, face with it. This should be done for about 30 sec at various regions of the body and repeated every now and then continued for a few days, till the child is comfortable or familiar with it. Then you progress in texture.... when progressing, you will introduce the first soft texture, then the new slightly harsher one.... example wool then silk then cotton then something prickly till you get to a comb or brush. Progressing depends on the reaction of the patient.
This is how i have seen it done in an Out Patient set up where full SI was not available. But if you have developed a SI room, then the same theory applies, you start with one sensation at a time and then provide all.
Ofcoarse with this you will give vestibular ex's (tilting, rolling, etc) and proprioceptive ( weight bearing on hands, legs, knees, etc)
Hope this helps. :-)