Functional MRI during the execution of a motor task in patients with multiple sclerosis and fatigue.
Radiol Med
; 117(8): 1398-407, 2012 Dec.
Article
en En
| MEDLINE
| ID: mdl-22729506
PURPOSE: This study was undertaken to assess cortical activation during execution of a motor task in patients with multiple sclerosis (MS) and fatigue. MATERIALS AND METHODS: We enrolled 24 right-handed patients affected by relapsing-remitting MS and mild disability (12 with and 12 without fatigue) and 15 healthy volunteers. Magnetic resonance imaging (MRI) examination (1.5 T) was performed with conventional sequences and an echoplanar imaging (EPI) sequence for functional MRI (fMRI). The motor task consisted of sequential finger tapping performed with the right hand. Statistical maps of motor activation were obtained. Comparison between the two subgroups of patients and between patients and controls was performed with analysis of variance (ANOVA) statistical analysis (p<0.05). RESULTS: Compared with controls, patients without fatigue showed greater activation of the primary sensorimotor cortex bilaterally, of the right supplementary motor cortex, of the left premotor cortex, of the left cerebellum and of the superior parietal lobule bilaterally. Compared with patients without fatigue, patients with fatigue demonstrated greater activation of the right premotor area, of the putamen and the dorsolateral prefrontal cortex. CONCLUSIONS: Patients with fatigue have greater activation of the motor-attentional network when performing a simple motor task.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Desempeño Psicomotor
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Mapeo Encefálico
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Imagen por Resonancia Magnética
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Esclerosis Múltiple Recurrente-Remitente
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Fatiga
Aspecto:
Patient_preference
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Radiol Med
Año:
2012
Tipo del documento:
Article
País de afiliación:
Italia
Pais de publicación:
Italia