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Titolo:
Abnormalities of spatial and temporal sensory discrimination in writer's cramp
Autore:
Sanger, TD; Tarsy, D; Pascual-Leone, A;
Indirizzi:
Beth Israel Deaconess Med Ctr, Behav Neurol Unit, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr Boston MA USA 02215 t, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr, Movement Disorders Ctr, Dept Neurol, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr Boston MA USA 02215 l, Boston, MA 02215 USA Stanford Univ, Med Ctr, Dept Child Neurol & Movement Disorders, Stanford, CA USA Stanford Univ Stanford CA USA rol & Movement Disorders, Stanford, CA USA
Titolo Testata:
MOVEMENT DISORDERS
fascicolo: 1, volume: 16, anno: 2001,
pagine: 94 - 99
SICI:
0885-3185(200101)16:1<94:AOSATS>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRIMARY SOMATOSENSORY CORTEX; REPETITIVE STRAIN INJURY; FOCAL HAND DYSTONIA; ADULT OWL MONKEYS; PARKINSONS-DISEASE; ACUITY; REPRESENTATIONS; HUMANS; LIP; REORGANIZATION;
Keywords:
writer's cramp; focal dystonia; tactile sensation; sensory discrimination; sensory receptive field;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Pascual-Leone, A Beth Israel Deaconess Med Ctr, Behav Neurol Unit, 330 Brookline Ave, Boston, MA 02215 USA Beth Israel Deaconess Med Ctr 330 Brookline Ave Boston MA USA 02215
Citazione:
T.D. Sanger et al., "Abnormalities of spatial and temporal sensory discrimination in writer's cramp", MOVEMENT D, 16(1), 2001, pp. 94-99

Abstract

Clinical observations of patients with writer's cramp suggest that abnormalities of the sensory system may be a frequent finding in this disorder. Neurophysiological data from an animal model of focal dystonia have revealed cells in somatosensory cortex with enlarged and overlapping tactile receptive fields. However, psychophysical studies so far have been unable to document a clinical correlate supporting a similar enlargement of receptive fields in humans. We compared the fingertip discrimination of the orientation of fine spatial gratings between writer's cramp and control subjects and found a significant decrease in grating sensitivity in the patients, consistent with the possibility of enlarged tactile receptive fields. In addition, we duplicated previous experiments showing an abnormality of tactile temporal discrimination. The results provide psychophysical measures which may relate to the development of sensory cortical reorganization in patients with writer's cramp.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 18:55:22