Mechanical impulse system for myotatic reflex investigation

Vermariën, H.; Maes, L.; Vereecke, F.

doi:10.1007/bf02447707

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Med. Biol. Eng. Comput.

1984

DOI: 10.1007/bf02447707

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Mechanical impulse system for myotatic reflex investigation

H. Vermariën

L. Maes

F. Vereecke

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1987

1991

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Cited by 2 publications

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“…been used to quantify the rigidity in patients suffering from Parkinson's disease (1, 2), to measure the severity of spasticity (3,4), and to make an early diagnosis of Huntington's chorea (5). In order to improve the clinical value of the phasic stretch reflex measurement, several types of mechanical reflex hammers have been constructed to produce constant and reproducible tendon taps (6)(7)(8)(9). The mechanical reflex hammers introduces a relatively simple method which could easily be used in the clinical situation.…”

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confidence: 99%

Stretch reflex variation in the relaxed and the pre-activated quadriceps muscle of normal humans

Toft

Sinkjær

Rasmussen

1991

Acta Neurologica Scandinavica

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The stretch reflex to patellar tendon taps was quantified by force measurements at the ankle in 7 normal subjects. In each experiment the stretch reflex was elicited from 14 consecutive stretches by two types of hammers (an ordinary hand-held hammer and a motorized hammer) in the relaxed and the pre-activated quadriceps muscle. The coefficient of variation for the 14 stretch reflexes fell from 54% in the relaxed muscle to 39% in the contracting muscle (p less than 0.05). The stretch reflex varied less between the different levels of active contraction than between the relaxed state and the contracted level (p less than 0.05). The experiment was repeated in all subjects and at all contraction levels. The coefficient of variation of the mean for the two experiments fell non-significantly from a mean value of 27% in the relaxed muscle to 14% in the contracting muscle. The coefficients of variation for the two hammers were almost identical. It is concluded that quantification of the stretch reflex can be made more precisely in the contracting muscle.

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mentioning

confidence: 99%

Stretch reflex variation in the relaxed and the pre-activated quadriceps muscle of normal humans

Toft

Sinkjær

Rasmussen

1991

Acta Neurologica Scandinavica

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Tendon reflex variability and method of stimulation

Stam

Tan

1987

Electroencephalography and Clinical Neurophysiology

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Mechanical impulse system for myotatic reflex investigation

Cited by 2 publications

References 3 publications

Stretch reflex variation in the relaxed and the pre-activated quadriceps muscle of normal humans

Stretch reflex variation in the relaxed and the pre-activated quadriceps muscle of normal humans

Tendon reflex variability and method of stimulation

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