Effect of auditory stimulus on executive function and execution time during cognitively demanding stepping task in patients with Parkinson’s disease - Watanabe, Tatsunori; Saito, Kotaro; Ishida, Kazuto; Tanabe, Shigeo; Horiba, Mitsuya; Itamoto, Shogo; Ueki, Yoshino; Wada, Ikuo; Nojima, Ippei (Neuroscience Letters, 2018)