https://www.wired.com/story/elon-musk-pcrm-neuralink-monkey-deaths/

UC Davis veterinary records cited by the Physicians Committee—which WIRED also obtained through a subsequent California public records request—chronicle a battery of complications that developed following procedures involving electrodes being surgically implanted into monkeys’ brains. The complications include bloody diarrhea, partial paralysis, and cerebral edema, a condition colloquially known as “brain swelling.”

Additional veterinary reports show the condition of a female monkey called “Animal 15” during the months leading up to her death in March 2019. Days after her implant surgery, she began to press her head against the floor for no apparent reason; a symptom of pain or infection, the records say. Staff observed that though she was uncomfortable, picking and pulling at her implant until it bled, she would often lie at the foot of her cage and spend time holding hands with her roommate.

Yeah. I think I'll pass.