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  Journal of Chemical Neuroanatomy

  Digital Access ScienceDirect v. 4-, 1991-
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  Neurophysiologische Untersuchungen über den Intentionstremor. Neurophysiological experiments on intention tremor (author's transl).

  Hufschmidt HJ, Linke D.

  Arch Psychiatr Nervenkr (1970). 1977 Nov 07;224(3):203-12.

  During a postural innervation, cerebellar intention tremor can be produced by applying direct stimulus to the muscle. The stimulus is followed by a silent period of 160 to 200 ms, which exceeds the normal variation. Simultaneously, a massive rebound in the antagonistic muscle is evoked due to the tension reflex in the agonistic muscle. Passive shortening or stretching of the voluntarily activated muscle has no effect: there is no silent period in the shortened muscle, no rebound in the stretched muscle, and, consequently, little or no oscillation follows. The spindle apparatus seems irrelevant to the development of intention tremor. The feedback mechanism of the Golgi-inhibition systems is discussed. These findings cannot be explained by assuming a central pacemaker.

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