The spectrum of behavioral effects investigated is so far modest. Evidence is accumulating that dopaminergic agents enhance synaptic plasticity (Otani 1998) and improve motor training in healthy humans (Meintzchel 2005). After stroke, Carbidopa-Levodopa has also enhanced the response to physiotherapy and motor learning (Scheidtmann 2001, Floel 2005). This protocol aims to test the hypothesis that Carbidopa-Levodopa may enhance the beneficial effect of TBS on reaction times in patients with chronic stroke.