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TagBrain transplants (partial)

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Eye close up

What if only part — not all — of your brain were transplanted?

You might end up seeing double out of an eye a thousand miles away

Recently, we’ve been discussing the concept of total or partial human brain transplants. What about transplanting an eye and the parts of the visual cortex it needs from one person to another? Which of the two people would be seeing out of that eye? The answer is not simple. As noted earlier, researchers may never succeed in transplanting both an eye and the hemisphere brain parts that the eye needs to function from one human being to another. But let’s assume a science fiction scenario — a thought experiment — in which there is an exchange. Jack gets Mary’s right eye/hemisphere and Mary gets Jack’s right eye/hemisphere. Both parties, who live on different parts of the planet, survive. For simplicity,…

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Electrocardiogram in hospital surgery operating emergency room showing patient heart rate with blur team of surgeons background

Are Head Transplants Soul Transplants?

Specifically, if your head were transplanted, would your soul go with it?

Wired offers a fascinating article about Dr. Robert White, a neurosurgeon in the mid-20th century who was famous for his extensive research on head transplants. He transplanted heads of various animals, often unsuccessfully (many animals died) but with some success, particularly with monkeys. The medical, ethical, and sociological issues are interesting in themselves, but I’ll focus here on the metaphysical issues. Specifically, if your head is transplanted, does your soul go with it? First, it worth noting that head transplantation is difficult surgery but doable. We know how to sew blood vessels together, how to fuse spinal bones, how to attach tracheas and muscles and peripheral nerves. Transplantation of an entire head (or an entire body, depending on your perspective)…