Apple is researching whether data from its iPhone could help detect depression, the WSJ reported.
The UCLA researchers will use the iPhone's video camera, keyboard, and audio sensors, as well as the Apple Watch, to collect data, The Journal reported.
The Biogen study is set to last two years and follow about 20,000 people, The Journal reported.
Apple, UCLA and Duke did not immediately respond to Insider's request for comment, and representatives from Apple, and UCLA declined to comment to The Journal.
Apple's algorithms wouldn't send data to Apple servers, The Journal reported, citing the documents.
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