¹⁰Majjhima Nikaya 36; Digha Nikaya 2. Sensory deprivation may seem to be contradictory with the idea of learning from new input, but the deprivation mainly refers to sensory input while wandering thoughts etc. are still running and provide input for the learning; moreover, sensory input is never zero anyway since the input from bodily senses (proprioception, interoception, pain perception) is hardly reduced. Presumably, such sensory deprivation also reduces the capture of attention by sensory stimulation and enables directing the attention to those phenomena that the learning needs as input (e.g. wandering thoughts).