A nervous system disease which is located in a part of the nervous system responsible for processing sensory information that consists of sensory receptors, neural pathways, and parts of the brain involved in sensory perception. Commonly recognized sensory systems are those for vision, hearing, somatic sensation (touch), taste and olfaction (smell). [ http://purl.obolibrary.org/obo/ECO_0007638 url:http://en.wikipedia.org/wiki/Sensory_system ]