It means that Plato's Cave is essentially correct...
So it seems the issue is indeed the old anti-realism debate about mind-dependence of reality and the post-empirical quandary that brings about under certain perspectives.
The idea of neural representation, in and of itself, is not the end of the story. Rather, it is. The
beginning starts with analysis of gradually more complex neural systems while tracking the behavioral nature of the organism, and in humans can include tracking real-time signals and responses, as opposed to more cognitively massaged high level perception. And while visual and auditory cognitive post-processing adds a great deal to experienced perception, this seems to be quite less in the case of touch. A sudden pin prick gets an automated response, although it can be followed by an ensuing high level response to the event.
If we are using neuroscience to make claims, these must include the instances where we can reliably track fully rote stimulus-response events that only later inform experience and perception, if ever. Generally, there is 'processing' going on, and a wide range of
conscious and unconscious activity, with agent behavior corresponding to both, not just the conscious level.
In short, the anti-real argument cannot be made on the basis of neuroscience alone; it is not a supported conclusion, as there are simple non-modeled responses to external stimuli, not just high-level conceptual and fully-modeled conscious experience.
You can make the case for anti-realism, of course, but just not by saying there is no observer. Once again, 'observer' is a concept that comes from outside neuroscience, and one may be remiss in going on a wild goose chase to find a neural correlate. Probably for starters because the concept, even if found valid, is likely to be a composite of more basic elements. At any rate, better to go from the science to the models, which might be more easily done if not tripping over what are more literary and philosophical terms.
(though there's no one actually in the cave!).
I think it was
Tsig just above who stated that this, or by extension any other, conclusions are not possible. There would be no one to make them in the case of no observer.