Want details on Elon Musk's brain implant trial? You'll have to ask him

FILE PHOTO: Neuralink logo and Elon Musk photo are seen in this illustration taken, December 19, 2022. REUTERS/Dado Ruvic/Illustration/File Photo

(This story has been refiled to fix the reference to 'unreasonable' risk, in paragraph 11)

WASHINGTON (Reuters) - Elon Musk's announcement this week that his startup Neuralink had implanted the first human patient with its experimental brain device generated immediate buzz.