nments. 2. This means that these levels of concentration depend on holding a particular perception (mental label) in mind. On this point, see MN 121. 3. AN 9:36 comments on the stages beginning with the dimension of nothingness as follows: "Thus, as far as the perception-attainments go, that is as far as gnosis-penetration goes. As for these two dimensions — the attainment of the dimension of neither perception nor non-perception & the attainment of the cessation of feeling & perception — I tell you that they are to be rightly explained by those monks who are meditators, skilled in attaining, skilled in attaining & emerging, who have attained & emerged in dependence on them." - --> - - - -