"Live bits of brain look like any other piece of meat — pinkish, solid chunks of neural tissue. But unlike other kinds of tissue or organs donated for research, they hold the memories, thoughts and feelings of a person. ... That uniqueness raises a whole new set of ethical quandaries when it comes to experimenting with living brain tissue.... These precious samples, normally discarded as medical waste, are donated by patients undergoing brain surgery and raced to the lab while the nerve cells are still viable.
"Other experiments rely on systems that are less sophisticated than a human brain, such as brain tissue from other animals and organoids. ...[W]ith major advances, these systems might one day be capable of much more advanced behavior, which might ultimately lead to awareness, a conundrum that raises ethical issues."
As a result, neuroscientists are now working closely with neuroethicists to design and monitor experiments involving brain tissue. www.sciencenews.org/article/living-brain-tissue-experiments-ethics-neuroscience
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