Most scientists are philosophical materialists so they only accept one definition of consciousness based on extreme prejudice of their dogma. Here's a really cool video talking about the dogma of philosophical materialism and how our consciousness seems to be connected to a much deeper reality than just basic materialism:
Truthfully, I think that video completely misunderstands what a physicist claims when/if they claim materialism. In particular, modern physics, while materialistic, interprets that as saying that everything in the universe acts as we know quantum 'particles' act.
In particular, all the experiments this video talks about have results that were predicted by quantum theory well before the experiment was done. For those who believe quantum mechanics describes the universe very well, there was no real surprise in these results.
But what these results DO is show that *classical* ideas of particles, waves, causality, etc are WRONG. But, again, we have known that for a century. Paradoxes arise when you attempt to understand quantum phenomena with classical ideas. But that is because you are trying to understand the newer, more correct description with an older, less correct description. That will *inevitably* lead to paradoxes.
So, what is 'materialism'?
I would say it is the position that everything that exists ultimately has the same description as what we would call 'matter'.
And, at the quantum level this is correct.
For example, if we look at electrons, they show wave properties and particle properties and are defined by their interactions. But this is also the case with photons, quarks, Higg's bosons, gluons, etc. ALL fundamental particles are 'quantum particles' and quantum particles have both (classical) wave and partile properties and are defined by their interactions. They interfere, they entangle, they are detected as units, they can be in superpositions of states, etc.
And it is having those properties in common with 'matter' that *defines* what a modern physicist means by 'materialism'.
And that means this video, which is attacking *classical* materialism, is attacking a straw man.
I think we live in a really strange Universe. It's almost as if the Universe is a living breathing animal giving birth to unimaginable possibilities for the purpose of keeping reality just beyond our full comprehension no matter what we focus on. The Universe is really strangely defiant to our full understanding of what it is and how it works. For example, what is the IT the decides something is being observed in a double slit type experiment in quantum mechanics. Whatever the IT is I do not believe we can ever capture an understanding of it.
There is no such IT. There is no decision. What we detect is random and, at base, that means the universe is probabilistic in nature. Whether we observe wave or particle properties depends on how we set up the experiment because setting up the experiment affects the quantum particles. If you attempt to detect them, you influence them. if you influence them enough, the interference patterns disappear.