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Titolo:
MYOCLONIC-LIKE FINGER MICRODISPLACEMENTS IN PATIENTS WITH CEREBELLAR DEFICITS
Autore:
BEUTER A; MILTON JG; LABRIE C; BLACK D;
Indirizzi:
UNIV QUEBEC,DEPT KINANTHROPOL,NEUROKINET LAB N8280,CP 8888 SUC A MONTREAL PQ H3C 3P8 CANADA UNIV CHICAGO HOSP,CTR NONLINEAR DYNAM PHYSIOL & MED CHICAGO IL 00000 UNIV CHICAGO HOSP,DEPT NEUROL CHICAGO IL 00000 HOP HOTEL DIEU,DEPT NEUROL MONTREAL PQ CANADA
Titolo Testata:
Canadian journal of neurological sciences
fascicolo: 2, volume: 22, anno: 1995,
pagine: 144 - 152
SICI:
0317-1671(1995)22:2<144:MFMIPW>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
PARKINSONS-DISEASE; VISUAL FEEDBACK; MOVEMENT; TRACKING; OSCILLATIONS; PURSUIT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
A. Beuter et al., "MYOCLONIC-LIKE FINGER MICRODISPLACEMENTS IN PATIENTS WITH CEREBELLAR DEFICITS", Canadian journal of neurological sciences, 22(2), 1995, pp. 144-152

Abstract

Background: Here we assess the ability of patients with cerebellar disease to execute a simple visually-guided movement task involving tracking of a target with the index finger. Methods: Spontaneous microdisplacements in index finger position are compared in patients with cerebellar deficits (ischemia [n = 3], multiple sclerosis [n = 3], degenerative cerebellar disease [n = 3]) and age matched healthy subjects. Subjects were required to maintain a constant finger position relative toa stationary baseline displayed on an oscilloscope. Results: Unusual transient abrupt movements (sac cadic or myoclonic-like) directed withor against gravity were seen in patients whose neurological deficits were the most severe (7/9 patients). These abrupt myoclonic-like movements occurred independently of visual input, were not associated with clinically observable myoclonus, and were not detected previously in patients with Parkinson's disease. These abrupt myoclonic-like movements were not associated with abnormalities in either physiological tremor, or oscillations in finger microdisplacements induced by insertion of a delay (300-1400 ms) into the visual feedback of this finger ''holding'' experiment. An unexpected finding is that the results obtained for patients with cerebellar deficits by insertion of an experimental delay are not significantly different from those obtained with their age-matched controls. Conclusions: These observations suggest that abrupt myoclonic-like movements are a characteristic abnormality of patients with a variety of cerebellar deficits and emphasize the value of this simple motor tracking task for characterizing movement disorders.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 07:29:03