... Moreover, in Indo-Tibetan Buddhism, among others, a mind which would not be focused on any specific object during meditation, as it seems to be the case in the OM model widely accepted in psychology (Bishop et al., 2004;Bögels et al., 2008;Brefczynski-Lewis et al., 2007;Brewer et al., 2011;Cahn & Polich, 2006;Chiesa et al., 2011;Dunn et al., 1999;Haydicky et al., 2012Haydicky et al., , 2015Holden, 2013;Hölzel et al., 2011;Lutz et al., 2008Lutz et al., , 2009Malinowski, 2013;Schoenberg et al., 2014;Smalley et al., 2009;Travis & Shear, 2010;Valentine & Sweet, 1999;Zylowska et al., 2008, etc.), would basically correspond to mind-wandering or mental sinking, which are the two main obstacles to meditation and concentration (Asanga, 1971(Asanga, , 2005(Asanga, , 2007(Asanga, , 2014Guillaume et al., 2020;Gyatso, 2010;Kamalashila, 2007;Tsongkhapa, 2000). ...