how has science determined that? consciousness is subjective so they are depending on what people have said to them. The mind of scientist and the person they are observing are at play here.
There's a lot that can be done purely mechanistically, if you're super concerned about consciousness interfering with accuracy.
For example, in the extreme, fMRIs show different activation patterns for people with different developmental disabilities. It's extremely clear and not at all subjective.
For example, in the extreme, fMRIs show different activation patterns for people with different developmental disabilities. It's extremely clear and not at all subjective.