The stability of the blood oxygenation level-dependent functional MRI response to motor tasks is altered in patients with chronic ischemic stroke - Betti, Kelley Cristine Mazzetto; Leoni, Renata Ferranti; Pontes Neto, Octávio Marques; Santos, Antônio Carlos dos; Leite, João Pereira; Silva, Afonso C.; Araújo, Dráulio Barros de (Stroke, 2010)