a physical condition in which there is a disturbance of normal functioning

injury to the brain that impairs its functions (especially permanently); can be caused by trauma to the head, infection, hemorrhage, inadequate oxygen, genetic abnormality, etc.

any disorder or disease of the brain

inability to coordinate voluntary muscle movements; unsteady movements and staggering gait

absence or loss of topognosia; inability to locate correctly a point of touch

abnormality in performing voluntary muscle movements