AIUpdated November 9

Neurotech firms trained AI on brain recordings.

Science’s investigation puts the scale at tens of millions of hours of EEG recordings collected by consumer neurotechnology companies. It reports that multiple firms used such data to develop brain foundation models. Interaxon says it trained its model on about 50,000 hours of recordings from Muse users, with personal details such as names and emails stripped out. Yet Science found that Interaxon’s privacy policy didn’t explicitly say the data could be used to train AI models of the brain. After the investigation raised the issue, the company updated the policy. Its chief marketing officer said users should be explicitly informed.

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Coverage started November 8