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Titolo:
COMPOUND GROUP-I EXCITATORY INPUT IS DIFFERENTIALLY DISTRIBUTED TO MOTONEURONS OF THE HUMAN TIBIALIS ANTERIOR
Autore:
SEMMLER JG; TURKER KS;
Indirizzi:
UNIV ADELAIDE,DEPT PHYSIOL ADELAIDE SA 5005 AUSTRALIA UNIV ADELAIDE,DEPT PHYSIOL ADELAIDE SA 5005 AUSTRALIA
Titolo Testata:
Neuroscience letters
fascicolo: 2, volume: 178, anno: 1994,
pagine: 206 - 210
SICI:
0304-3940(1994)178:2<206:CGEIID>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR-UNIT RECRUITMENT; DECEREBRATE CAT; H-REFLEX; NEURONS;
Keywords:
H-REFLEX; TIBIALIS ANTERIOR; HUMAN MOTOR UNIT; SIZE PRINCIPLE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
J.G. Semmler e K.S. Turker, "COMPOUND GROUP-I EXCITATORY INPUT IS DIFFERENTIALLY DISTRIBUTED TO MOTONEURONS OF THE HUMAN TIBIALIS ANTERIOR", Neuroscience letters, 178(2), 1994, pp. 206-210

Abstract

The distribution of the compound group I excitatory input to various-sized motoneurones in the human tibialis anterior muscle was studied, using low-intensity electrical stimulation of the common peroneal nerve. The stimulation initiated the H-reffex response in all motor units with a latency of similar to 40 ms (range 30-45 ms). In each experiment, the amplitude of the H-reffex responses in a pair of simultaneouslyactive motor units were assessed. It was shown that, although the stimulus intensity was identical, the amplitude of the H-reflex response was bigger in the motor unit with the higher recruitment threshold of the pair compared with the size of the reflex in the unit that had a relatively lower recruitment threshold. The present results are compared and contrasted with the findings in animals and one human study thatsuggested that the smaller-sized motoneurones receive larger group I excitatory input.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 05:34:09