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Titolo:
THE VOLITIONAL UNIT - A FUNCTIONAL CONCEPT IN CORTICO-MOTONEURONAL CONNECTIONS IN HUMANS
Autore:
JABRE JF; SALZSIEDER BT;
Indirizzi:
BOSTON UNIV,150 S HUNTINGTON AVE BOSTON MA 02130 BOSTON VA MED CTR 127 BOSTON MA 02130
Titolo Testata:
ELECTROMYOGRAPHY AND MOTOR CONTROL-ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY
fascicolo: 5, volume: 105, anno: 1997,
pagine: 365 - 369
SICI:
0924-980X(1997)105:5<365:TVU-AF>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIGITAL DEXTERITY; MOTOR UNITS; MACRO EMG; MUSCLES; TRACT; STIMULATION; ACTIVATION; MONKEY; HAND;
Keywords:
SIZE PRINCIPLE; MOTOR CONTROL; MOTOR UNIT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
J.F. Jabre e B.T. Salzsieder, "THE VOLITIONAL UNIT - A FUNCTIONAL CONCEPT IN CORTICO-MOTONEURONAL CONNECTIONS IN HUMANS", ELECTROMYOGRAPHY AND MOTOR CONTROL-ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY, 105(5), 1997, pp. 365-369

Abstract

We used the EMG precision decomposition technique to resolve complex EMG signals and derive information about the firing times of a family of motor units (MUs) and the force they produce. The active units shared a common behavior among their firing rates, a concept described by DeLuca et al. and termed the 'common drive'. This 'common' behavior was extracted as the average of the firing rates of MUs and found to track the subject's force trajectory. In this paper, we propose the existence of functional cortico-motoneuronal connections which provide for a large number of combinations between affector cortical motoneurons (CMNs) and effector spinal motoneurons (SMNs) for the generation of a purposeful movement. We argue that these connections provide the essential link between volition and movement and function as a 'volitional unit' which consists of the CMNs, the SMNs and the anatomical and interneuronal connections between them. (C) 1997 Elsevier Science Ireland Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:49:57