Could a brain ever exist on its own, divorced from or independent of a body? For a long time, philosophers have pondered such “brain-in-a-vat” scenarios, asking whether isolated brains could maintain consciousness when separated from their bodies and senses.
Typically, a person’s experiences are characterized by a web of interactions between the human brain, body and environment.
But recent developments in neuroscience mean this conversation has moved from the realm of hypothetical speculation and science fiction, to isolated examples where consciousness could be sealed off from the rest of the world.