The research mentioned in the article (which indicates no EEG activity): https://pmc.ncbi.nlm.nih.gov/articles/PMC7876463/

If TRUE and consciousness is eternal (using whatever framework you like), the idea of death becomes double sided. On one hand, physical death is sad as it's the end of this physical 'epic story' before our consciousness moves onto a new body/story. On the flip side, approaching body death is a sort of a temporary great relief as we are immortal and cannot actually die. I.e. After ten thousand years of being alive, a vampire looks forward to sleeping in their coffin at night.