Superior geniculocalcarine tract

Dr Henry Knipe and Dr James Lisik et al.

The superior geniculocalcarine tract or superior optic radiation, also known by its eponymous name Baum’s loop, is the posterior/superior fibres of the optic radiation. These superior fibres pass dorsally and posteriorly from the lateral geniculate nucleus through the retrolentiform internal capsule and parietal lobe to the superior margin of the calcarine sulcus (lingual gyrus, occipital lobe). This region forms part of the primary visual cortex.

Related pathology

Damage of this pathway on the left can result in a homonymous lower right visual field quadrantanopia, a.k.a. "pie-in-the-floor defect".

Neuroanatomy
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Article information

rID: 53054
Section: Anatomy
Tag: cases
Synonyms or Alternate Spellings:
  • Superior optic radiation
  • Baum's loop

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