3 karma · joined December 27, 2024
This is more important than it might at first seem, argues Erwin. Today, many scientists equate novelty with innovation, and this poses a problem for our understanding and study of evolution.
What is the significance of the finding?
Many treatments for phantom limb pain are built on the idea that the brain’s map of the missing limb gets scrambled and needs to be retrained. Our results show these maps aren’t broken — so therapies should move away from the brain and instead target the severed peripheral nerves. This result gives us confidence that brain-computer interfaces can reliably tap into a stable source of bodily signals, despite the loss of the sensory input.
Why didn’t we realize this until now?
Most of the evidence came from animal studies. Though, critically, amputated monkeys couldn't describe that they still feel phantom sensations of a missing limb — a subjective phenomenon unique to humans. By following people before and after amputation and tracking how the cortical body map changes, for the first time, we were finally able to see the stark stability of these maps across the amputation.
"The movement began in the 1970s with an essay titled “Should Trees Have Standing?—Toward Legal Rights for Natural Objects,” by American law professor Christopher Stone. Stone wrote that the history of law has followed the arc of human moral development, described by Charles Darwin in The Descent of Man. “Originally each man had regard only for himself and those of a very narrow circle about him … then ‘his sympathies became more tender and widely diffused.’” The rights-of-nature philosophy shifts the value of nature away from its ability to provide resources for extraction to its capacity to sustain life."