Table 2.

NCC defined according to logical sufficiency.

Logically sufficient NCC
Neural state N1 is logically sufficient for conscious state C1 if, and only if, given N1 then C1 is logically necessary and ¬C1 is logically impossible.
Reflects standard use	Reasonable and coherent	Theoretically neutral
Lacks consistency with the concept of NCC that informs the empirical methodology NCC researchers employ.	Lacks external coherence as it is inconsistent with the logical possibility of zombies.	Lacks empirical neutrality since it logically rules out prior to empirical investigation the possibility of a neural state correlating with two different conscious states.