Tonic contractions are those contractions that are maintained from several minutes up to hours at a time.
2.
Aberrant regeneration of nerve fibers intended for the ciliary muscle causes abnormal, tonic contraction of the pupil with accommodation.
3.
(1 ) It is, like other muscles, always in a state of tonic contraction, and having no orifice closed.
4.
Surgery known as GPi DBS ( Globus Pallidus Pars Interna Deep Brain Stimulation ) has come to be popular in treating phasic forms of dystonia, although cases involving posturing and tonic contractions have improved to a lesser extent with this surgery.
5.
:I don't know anything about this particular child, but the symptom and the fact that he's German suggest Myotonia congenita, a channelopathy resulting in tonic contraction of skeletal muscles ( which constantly " exercises " them ) . rekcut 14 : 41, 24 May 2007 ( UTC)
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