Cerebral Palsy (CP) is the most common cause of severe motor disability in children. It is an umbrella term for a group of disorders that can be defined as non-progressive and characterized by muscular impairments. A child with Cerebral Palsy will have accompanied problems with sensation, perception, cognition, communication, and behavior.
People, especially children, who have cerebral palsy can experience abnormal sensation and perception. Some children with cerebral palsy have an impaired ability to feel simple sensations like touch and pain. They may also have difficulty perceiving and identifying objects using their sense of touch. For example, if you placed something in their hands, without looking, it would be almost impossible for them to distinguish what it is.
Visual perception can also be effected. When a child with CP has a visual processing deficit, it means that they have a hard time finding the words for objects they are viewing. Sometimes if they are asked to go get an object, they might look right at it and then say they can't find it. This is because they are seeing it, but their brains are not processing what they are looking at.
Reed, Vicki A. (2012). An Introduction to Children with Language Disorders. Upper Saddle River, NJ: Pearson Education, Inc.