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Absolute refractory period of human nerve fibres during postnatal myelination
Author(s) -
Duron Bernard,
KhaterBoidin Josette
Publication year - 1991
Publication title -
international journal of developmental neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 88
eISSN - 1873-474X
pISSN - 0736-5748
DOI - 10.1016/0736-5748(91)90069-x
Subject(s) - refractory period , refractory (planetary science) , nerve conduction velocity , period (music) , absolute (philosophy) , nerve fibre , materials science , chemistry , anatomy , medicine , anesthesia , composite material , physics , philosophy , epistemology , acoustics
In order to study the absolute refractory period of a given group of nerve fibres during development we measured absolute refractory periods and conduction velocities of motor fibres and the most excitable fibres in the human ulnar nerve of newborns, children and adults. In each group of nerve fibres absolute refractory period was not correlated to conduction velocity (i.e. fibre diameters) and was rather constant during development. However, absolute refractory period of the most excitable fibres was smaller than absolute refractory period of motor fibres independently of the subject's age. Thus, it appears that already at birth, absolute refractory period is characteristic for a given group of nerve fibres.