Biases in BCI experiments: Do we really need to balance stimulus properties across categories? - Luca La Fisca; Virginie Vandenbulcke; Erika Wauthia; Aurélie Miceli; Isabelle Simoes Loureiro; Laurence Ris; Laurent Lefebvre; Bernard Gosselin; Cyril R. Pernet (Frontiers Comput. Neurosci., 2022)