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Relating to or involving neural pathways situated outside or independent of the pyramidal tracts.


(ˌɛkstrəpɪrəˌmɪdəl; ˌɛkstrəpɪˈræmɪdəl)
outside the pyramidal tract


(ˌɛk strə pɪˈræm ɪ dl)

1. pertaining to nerve tracts other than the pyramidal tracts, esp. the corpora striata and their associated structures.
2. located outside the pyramidal tracts.
References in periodicals archive ?
Moreover, the diagnosis of PDD conformed to the diagnostic criteria of dementia proposed by the Movement Disorder Society Task Force: (1) diagnosis of primary PD, (2) PD-related cognitive decline by the Mini-Mental State Examination (MMSE), (3) cognitive impairment that affected the patient's daily life ability, and (4) development of extrapyramidal system of PD before dementia, with regular time interval.
Extrapyramidal system, especially the basal ganglia, involvement was suggested (1, 2, 5).
In severe cases, extrapyramidal system findings such as tremor, rigidity, and bradykinesia are observed as in Parkinsons disease (10).