Brain anatomy

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This page is a dumping ground for anatomical terms that come up in conversation with neuroscientists, phrased (hopefully!) in a way that CS people can understand them. Click a tract name for specific information, including instructions for segmenting the tract out of a tractogram in Brainapp.

Cingulum / cingulum bundle

???

Corona radiata

A fan-shaped sheet of WM that radiates from the brain stem superior to the cortex.

Corpus callosum (CC)

The large tract connecting the hemispheres. In a mid-sagittal cutting plane, it looks like a letter C turned on its side, with the tips pointing inferior. See [1]. Moving around the CC from the back (posterior), it is subdivided into parts named:

Splenium: The posterior, slightly bulbous part of the CC.
Body: The more-or-less flat part of the CC between the splenium and the genu.
Genu: The anterior part of the CC, where it bends back on itself. "Genu" means "knee".
Rostrum: The part of the CC inferior and posterior to the genu.

Corticospinal tract (CST): ???
Forceps major / forceps posterior: The posterior projection of the CC (from the splenium) into the occipital lobe. In a transverse cutting plane, it looks like a letter C at the posterior portion of the brain with the tips pointing posterior. See [2].
Forceps minor / forceps anterior: The anterior projection of the CC (from the genu) into the cerebrum. In a transverse cutting plane, it looks like a letter C at the anterior portion of the brain with the tips pointing anterior. In other words, it looks sort of like a pair of mandibles over the eyes. See [3].
Fornix: ???
Inferior longitudinal fasciculus (ILF): ???
Internal capsule: ???
Superior longitudinal fasciculus (SLF): ???
Thalamus: ???
Uncinate fasciculus: ???

External Links

Anatomical directions and anatomical planes on Wikipedia
Biology-Online dictionary --- search for text descriptions of terms
U. Arkansas neuroanatomy atlas images
Radiopaedia --- a wiki encyclopedia for radiology; search for articles

Brain anatomy

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