Today we open by talking about some astounding work of UC Berkeley neuroscientist Jack Gallant—in which he trained an AI system to infer what test subjects were viewing on a video screen just by watching their brains light up on an MRI. We then get to the truly speculative stuff. Could near-infrared light be used to excite, or trigger neurons? If so, could some creepy descendant of this technology be used to implant memories, or desires into people?

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