Altered cortical activation patterns in post-stroke patients during walking with two-channel functional electrical stimulation: a functional near-infrared spectroscopy observational study - Xu, Sheng; Zhu, Shizhe; Li, Minyao; Zhang, Tianjiao; Wang, Qinglei; Sui, Youxin; Shen, Ying; Chaojie, Kan; Zhuang, Ren; Guo, Chuan; Wang, Tong; Zhu, Lan (Frontiers in Neurology, 2025)