Riemannian Geometry for the classification of brain states with intracortical brain-computer interfaces. - Arnau Marin-Llobet; Arnau Manasanch; Sergio Sanchez-Manso; Lluc Tresserras; Xinhe Zhang; Yining Hua; Hao Zhao; Melody Torao-Angosto; Maria V. Sanchez-Vives; Leonardo Dalla Porta (CoRR, 2025)