a crossing of bands of nerve fibers in the brain or spinal cord
Word origin
L decussatio
decussation in American English
(ˌdikəˈseiʃən, ˌdekə-)
noun
1.
a process of becoming or condition of being crossed in the form of an X.
2. Anatomy
a nerve or tract of nerve fibers that crosses from one side of the central nervous system to the other
Word origin
[1650–60; decussate + -ion]This word is first recorded in the period 1650–60. Other words that entered Englishat around the same time include: agency, backhand, parade, parameter, syllabus-ion is a suffix, appearing in words of Latin origin, denoting action or condition, usedin Latin and in English to form nouns from stems of Latin adjectives (communion; union), verbs (legion; opinion), and esp. past participles (allusion; creation; fusion; notion; torsion)
Examples of 'decussation' in a sentence
decussation
The corticospinal tract fibers innervating the lower extremity caudal to the pyramidal decussation might be involved.
Hiromasa Tsuda, Kozue Tanaka, Shuji Kishida 2012, 'Pure Motor Monoparesis in the Leg due to a Lateral Medullary Infarction', Case Reports in Medicinehttp://dx.doi.org/10.1155/2012/758482. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Color-coded diffusion tensor imaging in our patient revealed absence of decussation of the superior cerebellar peduncle.
Chi-Wei Lin, Chung-Ping Lo, Min-Chien Tu 2018, 'Horizontal gaze palsy with progressive scoliosis: a case report with magnetic resonancetractography and electrophysiological study', BMC Neurologyhttp://link.springer.com/article/10.1186/s12883-018-1081-9. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)