TABLE 2.

Shamatha extracted material for the feature silence/quietness.

Expert text	Extracted material
Wallace, 2011b	“… the sheer silence, the stillness, the lack of perturbation …” – p. 120
	“… a quiet, percolating, radiating sense of serenity, joy that is very malleable.” – p. 145
Wallace, 2009/2014	“… blissful, luminous, conceptually silent state …” – p. 93
Wallace, 2011a	“… a luminous, blissful, silent space of awareness …” – p. 40
	“… peaceful, luminous silence …” – p. 111
	“When the mind goes quiet, what remains is the substrate consciousness.” – p. 196a
	“The conceptual mind is quiet …” – p. 208
	“… the silent, luminous, blissful substrate consciousness.” – p. 249

^aWallace uses the term substrate consciousness to refer to the state aimed for in Shamatha practice (Supplementary Table S1, section “Substrate Consciousness”). He indicates that substrate consciousness can also be accessed in sleep, death, coma, fainting, and hypnosis, but that the degree of attentional stability and vividness may differ.