Definitions for "Dysmetria"
Improper "measuring" of distances in voluntary movements. The limb arrests too soon or overshoots the mark when the subject attempts to make a specific movement. Dysmetria is a sign of damage to pathways connecting the cerebellum with the spinal cord and brainstem, or damage to parts of the cerebellum itself.
Impaired ability to perform rapid alternating movements.
Difficulty in performing movements due to problems with the interpretation and anticipation of the distance to be covered.