In this stage of contemplation, the externalizing faculty of his mind ceases to operate. This means that he can no longer see hear feel smell or taste any physical objects. But it does not mean that he can no longer form corresponding ideas of those objects. To arrive at such a situation is indeed the work of the following stage. Therein even the possibility of imagining every kind of external experience completely disappears.
-- Notebooks Category 23: Advanced Contemplation > Chapter 7: Contemplative Stillness > # 22