Soto et al. (2009) found that pleasant music positively affected stroke patients with UN. Their patients showed markedly improved spatial attention to targets on the neglect side under a preferred pleasant music condition compared with unpleasant music and silence conditions. They hypothesized that the positive emotion and optimum arousal level evoked by pleasant music increases attentional resources and then reduces symptoms of UN. Their study was the first to systematically examine the effects of pleasant music on several tasks—perceptual reports, detection, star cancellation, line bisection, and reading—but they assessed only 3 patients; thus, their preliminary findings still need to be validated.