Branching or splitting into two divergent pathways, as at the optic chiasma.
A cross over of axons from one side of the brain to the other.
Part of brain where nerve fibres from one side cross to the other.
a crossing-over; usually refers to the crossing of most of the fibers in the large motor tracts to opposite sides in the medullary pyramids
refers to the crossing of a neural pathway in the spinal cord or brainstem
an intersection or crossing of two tracts in the form of the letter X
a site where axons from one part of the central nervous system cross the midline on their way to a different region on the other side
L. decussatio, from decussis, the intersection of two lines, the letter x. Crossing of tracts, motor clecussation, sensory clecussation.
A crossing of fibers. Qualifying terms are self-explanatory, as decussation of the fillet, of the pyramids, etc.
(L. decussare, to intersect or cross): A location in the brain where nerve fibers cross the midline (ie. decussation of te superior cerebellar peduncle).
same as a chiasma. A crossing of fibers in the form of an X.
from Roman numeral X. Refers to X-shaped crossing of nerve bundles at junctional regions, e.g. pyramidal decussation (brain-spinal cord, Ch. 3), decussation of superior cerebellar peduncles (pons-midbrain, Ch. 3).
Decussation is used in biological contexts to describe a crossing.
