When the somatosensory association area is removed on one side of the brain, the person loses ability to recognize complex objects and complex forms felt on the opposite side of the body.  In addition, he or she loses most of the sense of form of his or her own body or body parts on the opposite side.  In fact, the person is mainly oblivious to the opposite side of the body - that is, forgets that it is there.  Therefore, he or she also often forgets to use the other side for motor functions as well.  Likewise, when feeling objects, the person tends to recognize only one side of the object and forgets that the other side even exists.  This complex sensory deficit is called amorphosynthesis.



References
1. Guyton, Arthur C., & Hall, John E. Textbook of Medical Physiology 11th Edition. 2006.