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  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

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New York neurologist Charles Loomis Dana (1852 to 1935)

In the late 19th century, Dana used an “ataxiagraph” for graphically recording postural sway. (Photograph courtesy of the National Library of Medicine.)

Associated Disorders

  • Ataxia
  • Binswanger disease
  • Dysequilibrium
  • Myasthenia gravis
  • Myelopathy
  • Myopathies
  • Neuropathy
  • Normal pressure hydrocephalus
  • Parkinsonism
  • Psychogenic movement disorders
  • Stroke
  • Vestibular disorders