[Link] First almost fully-formed human [foetus] brain grown in lab, researchers claim

ESRogs

This seems significant:

An almost fully-formed human brain has been grown in a lab for the first time, claim scientists from Ohio State University. The team behind the feat hope the brain could transform our understanding of neurological disease.

Though not conscious the miniature brain, which resembles that of a five-week-old foetus, could potentially be useful for scientists who want to study the progression of developmental diseases.

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The brain, which is about the size of a pencil eraser, is engineered from adult human skin cells and is the most complete human brain model yet developed

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Previous attempts at growing whole brains have at best achieved mini-organs that resemble those of nine-week-old foetuses, although these “cerebral organoids” were not complete and only contained certain aspects of the brain. “We have grown the entire brain from the get-go,” said Anand.

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The ethical concerns were non-existent, said Anand. “We don’t have any sensory stimuli entering the brain. This brain is not thinking in any way.”

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If the team’s claims prove true, the technique could revolutionise personalised medicine. “If you have an inherited disease, for example, you could give us a sample of skin cells, we could make a brain and then ask what’s going on,” said Anand.

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For now, the team say they are focusing on using the brain for military research, to understand the effect of post traumatic stress disorder and traumatic brain injuries.

http://www.theguardian.com/science/2015/aug/18/first-almost-fully-formed-human-brain-grown-in-lab-researchers-claim

This seems significant:

An almost fully-formed human brain has been grown in a lab for the first time, claim scientists from Ohio State University. The team behind the feat hope the brain could transform our understanding of neurological disease.

Though not conscious the miniature brain, which resembles that of a five-week-old foetus, could potentially be useful for scientists who want to study the progression of developmental diseases.

...

The brain, which is about the size of a pencil eraser, is engineered from adult human skin cells and is the most complete human brain model yet developed

...

Previous attempts at growing whole brains have at best achieved mini-organs that resemble those of nine-week-old foetuses, although these “cerebral organoids” were not complete and only contained certain aspects of the brain. “We have grown the entire brain from the get-go,” said Anand.

...

The ethical concerns were non-existent, said Anand. “We don’t have any sensory stimuli entering the brain. This brain is not thinking in any way.”

...

If the team’s claims prove true, the technique could revolutionise personalised medicine. “If you have an inherited disease, for example, you could give us a sample of skin cells, we could make a brain and then ask what’s going on,” said Anand.

...

For now, the team say they are focusing on using the brain for military research, to understand the effect of post traumatic stress disorder and traumatic brain injuries.

http://www.theguardian.com/science/2015/aug/18/first-almost-fully-formed-human-brain-grown-in-lab-researchers-claim

Do I have to provide a full specification of what would be "satisfactory" just to recognize an ethical problem?

Not "full", but some, yes. Otherwise anyone can squint at anything and say "I think there is an ethical problem here. I can't quite put my finger on it, but my gut feeling ("visceral level") is that there is" -- and there is no adequate response to that.

As an instance of the limits of replacing words with their definitions to clarify debates, this looks like an important conversation.

The fuzziest starting point for "consciousness" is "something similar to what I experience when I consider my own mind". But this doesn't help much. Someone can still claim "So rocks probably have consciousness!", and another can respond "Certainly not, but brains grown in labs likely do!". Arguing from physical similarity, etc. just relies on the other person sharing your intuitions.

F... (read more)

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[Link] First almost fully-formed human [foetus] brain grown in lab, researchers claim

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[Link] First almost fully-formed human [foetus] brain grown in lab, researchers claim

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