Hundreds of pages of veterinary and surgical records showed that the monkeys suffered from infections, seizures, and loss of motor function after Neuralink employees removed portions of the animals’ skulls, screwed “pill boxes” to their heads, and implanted devices into their brains.

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Citizens for Alternatives to Animal Research and Experimentation
CAARE alert:
End monstrous experiments on Monkeys at 'Rockefeller University
Billionaire’s Brain-Chip Company Operating New, Secretive Facility in Del Valle.
AUSTIN, Texas—A national doctors group is calling on Elon Musk and
his company Neuralink to stop using animals in deadly brain
experiments and urging Austin Mayor Steve Adler to investigate the
matter. Outside City Hall Wednesday morning, locals and
representatives from the Physicians Committee for Responsible
Medicine held signs reading “Shut Down Elon Musk’s Animal Lab” and
“Support Science, Not Cruelty.” In addition, a pair of extra-long
CapMetro buses are moving through the city wrapped in ads featuring
a caged monkey with the text “Elon Musk: Release the Videos! What
Are You Hiding?” Inside all 400 CapMetro buses, ads carry the same
message.
The group also sent a letter to Adler, asking him to investigate
Neuralink, to end any incentives that the city of Austin may provide
to the company, and to urge the closure of its animal
experimentation facility in Del Valle, which is currently under
expansion. The letter to the mayor noted that Neuralink appears to
have used a shell corporation to purchase the Del Valle land. Google
Earth images of the property show significant new construction
between March 2021 and January 2022, including a large structure
that could potentially house animals.
Neuralink came under scrutiny earlier this year when documents,
obtained by the Physicians Committee following a public records
lawsuit, revealed the company used macaque monkeys in highly
invasive, often fatal experiments in its development of a
“brain-machine interface.” Hundreds of pages of veterinary and
surgical records showed that the monkeys suffered from infections,
seizures, and loss of motor function after Neuralink employees
removed portions of the animals’ skulls, screwed “pill boxes” to
their heads, and implanted devices into their brains.
In the case of one monkey known only as “Animal 15,” staff observed
signs of neurological impairment and head pain two days after
Neuralink implanted a device in her skull. Staff wrote that she
“appears ataxic,” meaning she had lost coordination and balance, and
that she may have had “swelling” in her brain. Just four days after
the surgery, she was shivering, scratching, and picking and pulling
at the implant in her head. When they eventually euthanized Animal
15, a necropsy revealed that parts of her brain were “focally
tattered,” that “remnant electrode threads” were found in her brain,
and there were indications of hemorrhaging.
The Physicians Committee continues to pursue its public records
lawsuit against the University of California, Davis, a public
university, due to its failure to release video footage recorded by
Neuralink while conducting experiments at the university. Neuralink
now uses animals at its facilities in California and Texas.
“There is no excuse for Neuralink’s cruel, scientifically
questionable experiments,” says Ryan Merkley, director of research
advocacy for the Physicians Committee. “Human-relevant, noninvasive
methods already exist that allow patients to interact with computers
using only their brains.”