I'm not 100% sure what I believe anymore lol.
I think at this point I also believe that these events are created in the mind. I agree with you that

consciousness is a result from synaptic activities.

However, I am open to the idea that consciousness can (in some cases) connect into a higher or collective consciousness. I'm open to that idea. There is some weird and cool quantum mechanics research that "may" suggest that (i.e. entanglement theory...etc). My understanding of that topic is limited though.