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Elon Musk ‘s neuroscience startup Neuralink Corp. is expected to give a progress report on its brain-implant technology in a highly anticipated streamed event that began Wednesday night.

In a tweet last week, the company teased a demo for the event with a short video that slowly spelled out the message “please join us for a show and tell.” Some outside researchers said the video may indicate that a Neuralink device has been used to decode brain signals to type words on a screen, although they cautioned that it would most likely be through a monkey or a wearable device.