Rhythmische orale Automatismen bei Dezerebrationszust�nden

Poeck, Klaus; Hubach, H

doi:10.1007/bf00242743

Cited by 9 publications

(1 citation statement)

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“…In his investigations on tremor rhythms Jung (1941) found frequencies from 3-25/second in health and disease. Rhythmic oral automatisms, which Poeck and Hubach (1963) described in decerebrate states, had a frequency of 1-3/second. Stern (1936) described rhythmic movements of various types and locations in epidemic encephalitis; the frequencies specified lay around 50/minute and 96/minute (8 in 5 seconds); but there are also slow rhythmic movements mentioned, without, however, any actual frequencies being given.…”

Section: Discussionmentioning

confidence: 99%

Rhythmic patterns of motor activity after lesions of the central nervous system in man

Schepelmann

1979

Acta neurochir

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SummaryThe behaviour of the motor activity was investigated in a selected group of neurosurgical patients with various cerebral and spinal lesions, as well in a group of healthy controls. Under predetermined standard conditions electromyograrns were recorded simultaneously from six muscles, and the time-voltage-integrals of the muscle action potentials were continuously recorded. In this paper rhythmic patterns of the motor activity after lesions of the central nervous system are described. I. Rhythm With a Frequency of 0.3-0.8~MinuteIn decerebrate states paroxysmal increases in rhythmic sequences with a frequency of 0.3-0.8/minute can occur. The amplitude always predominated on the contralateral side of the body if there was a predominantly unilateral supratentorial lesion present. The shape was characterized in typical cases by a steep rise and an almost exponential fall. A synchronous rhythm of the respiration could appear simultaneously. Other motor rhythms could also appear at the same time. With the simultaneous appearance of different motor rhythms there was clear evidence of their interaction, which corresponded to what v. Hoist (1939) designated "relative co-ordination". II. Rhythm With a Frequency of 12-18/MinuteIn decerebrate states and the apaliic syndromes following decerebration rhythmic fluctuations of motor activity with a frequency of 12-18/minute can appear. The amplitudes predominated unilaterally or were changing from side to side. The shapes of the ascending and descending phases were approximately the same. This rhythm has so far only been identified during paroxysmal increases of motor activity. It is possible that this involves a motor rhythm synchronous with respiration, which can appear as a pathological phenomenon after particular lesions of the central nervous system. IlL Rhythm with a Frequency of 2-4~MinuteIn lesions of the central nervous system at various levels rhythmic fluctuations of the motor activity with a frequency of 2-4/minute can occur. So far they have been detected (i) in large suprasellar turnouts, (ii) in decerebrate states and the apallic syndroms following them, and also (iii) in spinal lesions. Although these lesions of the central nervous system are found at widely differing levels, the rhythmic fluctuations of motor activity with a frequency of 0.3/minute are probably identical processes in view of their common features. The predominant amplitudes changed from side to side. The shapes of the ascending and descending phases were approximately the same. The predominating intensity of the rhythm can change the location, in the sense of a "change of focus", which was first described by Jung (1941) in human tremor. In the spinaI lesions the relationship between the rhythm on the right and left sides of the body corresponded to a "relative co-ordination" (v. Hoist 1939). In the spinal lesions section of the posterior nerve roots does not abolish the rhythmic fluctuations. The origin of the rhythm is therefore independent of peripheral afferents and of the gamma loop; f...

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Section: Discussionmentioning

confidence: 99%