Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Tabes Dorsalis ?
    ### Response:
    Tabes dorsalis is a slow degeneration of the nerve cells and nerve fibers that carry sensory information to the brain. The degenerating nerves are in the dorsal columns of the spinal cord (the portion closest to the back of the body) and carry information that help maintain a person's sense of position.
    