Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cerebellar degeneration ?
    ### Response:
    Cerebellar degeneration refers to the deterioration of neurons in the cerebellum (the area of the brain that controls muscle coordination and balance). Conditions that cause cerebellar degeneration may also affect other areas of the central nervous system, such as the spinal cord, the cerebral cortex, and the brain stem.
    