How Much Brain Do I Need To Be Human?

“How much brain do you need to be human?” Or to put it more generally: “What kinds of capacities are necessary for one to be considered a person?” Underlying the former question is another criterion for personhood, that of consciousness/sentience. With the neurologically impaired, the question we are really asking is: “Can someone be a person without being conscious or sentient?” The question of brain activity then is related to how much brain activity is necessary to sustain consciousness/sentience, and is actually secondary to the more basic criterion of consciousness/sentience." for more....