Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

Sign Up for a Free Account For information on discounts, see Plans & Pricing

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

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Engraving of a sagittal section of the brain as depicted by Samuel Thomas von Sömmerring

From Sömmerring's De Basi Encephali Et Originibus Nervorum Cranio Egredientium Libri Quinque: Cum IV. Tabulis Aeneis, 1778. The olfactory bulb and tract, the optic chiasm, and the third nerve (exiting the brainstem from the interpeduncular fossa) are evident. (Public domain.)

Related Article

Related Media

Associated Disorders

  • Cancer
  • Congenital disorders
  • Infections
  • Inflammatory disorders
  • Internuclear ophthalmoparesis
  • Leukemia
  • Lymphoma
  • Malingering
  • Meningitis
  • Psychogenic disorders
  • Supranuclear palsies
  • Tuberculosis