Increased activity of the ipsilateral motor cortex during a hand motor task in patients with brain tumor and paresis.
AJNR Am J Neuroradiol
; 18(5): 865-9, 1997 May.
Article
em En
| MEDLINE
| ID: mdl-9159363
ABSTRACT
PURPOSE:
To look for changes in the motor cortex in patients with brain tumors.METHODS:
Both cerebral hemispheres in seven patients with brain tumors were examined with functional MR imaging during a motor task performed by the hand opposite the site of tumor. The ratio of the activated area in the motor cortex ipsilateral/contralateral to the tested hand was calculated for each subject. Twenty healthy subjects were also examined in the same manner for comparison.RESULTS:
The ratio of the ipsilateral/contralateral activated area was abnormally high in three patients with tumor-related paresis of the tested hand. The ratio was significantly greater in patients with paresis than in healthy subjects.CONCLUSION:
This study demonstrated increased activity in the ipsilateral (unaffected) motor area during a hand motor task in patients with brain tumor and paresis, which was thought to reflect compensatory reorganization induced by the functional damage.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Paresia
/
Mapeamento Encefálico
/
Neoplasias Encefálicas
/
Imageamento por Ressonância Magnética
/
Córtex Motor
Tipo de estudo:
Clinical_trials
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
AJNR Am J Neuroradiol
Ano de publicação:
1997
Tipo de documento:
Article