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KMID : 0359719950130040979
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Journal of the Korean Neurological Association
1995 Volume.13 No. 4 p.979 ~ p.986
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Two Cases of Stimulus Sensitive Spinal Myoclonus
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Abstract
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Myoclouns is a complicated and poorly-understood phenomenon caused by many pathological conditions. Myoclonus whiich is triggered by sensory stimuli has been termed reflx myoclonus and divided into cortical, reticular and spinal types depending
on
the
generator sites. Segmental myoclonus of spinal origin consists of synchronous rhythmical jerks confined to a group of muscles supplied by either one segmnent or several contiguous segments of the spinal cords.
We present two cases of spinal reflex myoclonus. One was 50 years old female who showed complex myoclonic jerks involving the abdominal wall and paraspinal muscles resembling "belly dance". The other was 26 years old male who showed intermittent
synchronous upper cervical axial muscle contractions. In both cases, jerks were increased with certain stimulti, but disappeared during sleep. They showed normal EEGs and absence of enhancement of SSEPs.
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KEYWORD
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