The zombie and the replica brain
Consciousness is often described as the subjetive "what it is like to be..."
Then, for instance, if we can imagine that there is an experience of "being" something, we can call it conscious. So, there is probably no subjective experience to being a mug or coffee, so then it is not conscious. However, there is probably something that "it is like being" a bat or a worm. While our brains are not set up to understand in depth what it is like to be a bat, we can assume that there is SOMETHING that it is like to be one, therefore the bat is probably conscious.
This is based on the work of Thomas Nagel, expanded a little by susan blackmore.
The Zombie
This is not about those crazy Haitian half-dead corpses. It is a question that pertains to the nature of consciousness, that afaik was popularized by Susan Blackmore.
Imagine that there is a zombie that is exactly the same as you in behaviour, appearance and thought, the only difference being that they are not conscious. By this I mean that they have no subjective awareness of the world and are constantly carrying out their actions (which are identical to those you would) without the inner "consciousness".
The Replica Brain
This is another similar idea, only going at it from another angle. This one I think is an original idea of mine, but I'm sure someone else has thought of it lol.
Imagine a brain that is a complete replica of your own. Same memories, same experiences, only it is being kept functional in a vat. Now, imagine it were possible to selectively remove certain processing centers from the brain while the others would still function.
So, some mad scientist comes up to your replica brain and begins to remove verious functions:
Stimuli input and processing (Also motor skills)
Emotional (affective) processing
language
memory (working and long term)
attention
Now, the question is, once these processing systems are removed, can this identical replica brain (which is theoretically still working minus the above mentioned processes) still be conscious?