Well, we aren't individually sentient. We have the capability to hold a copy of one of our subcultures in our minds. And it holds just for a few months without reinforcement. Then it starts to break down. It's the specific "modern human" case.
Generally...
Well. There is Hinduism for you. Brahma (computing network) may 'dream' - to emulate a Universe (or few). He is the subject and the Universe is object of his consciousness.
https://disqus.com/home/channel/saywhateveryoulike/discussion/channel-saywhateveryoulike/are_you_your_consciousness/#comment-4367763645
Neuroscientist Researching Intelligence-Enhancing Microchips
China, India, Africa... wherever. The dangers are underestimated, if anything. But in the moment you bush... ban some research or regulate it to really slow down... the world won't wait for you.
And whoever gets ahead may use you as you use the apes that didn't go ahead and remained in their forest...
https://disqus.com/home/channel/factsfunandfaith/discussion/channel-factsfunandfaith/neuroscientist_researching_intelligence_enhancing_microchips/#comment-4367638096