"Brain scans, however, are quite telling, especially when analyzed with an algorithm, Brent and his colleagues discovered. "We're trying to figure out what's going on in somebody's brain when they're thinking about suicide," says Brent.
These scans, taken using fMRI, or functional magnetic resonance imaging, show that strong words such as 'death,' 'trouble,' 'carefree,' and 'praise,' trigger different patterns of brain activity in people who are suicidal, compared with people who are not. That means that people at risk of suicide think about those concepts differently than everyone else-evidenced by the levels and patterns of brain activity, or neural signatures."
"And, of course, there's the law-enforcement angle. Instead of relying on sketch artists and police lineups, a real-life version of a Recaller could tap into a witness's memory and reconstruct what they saw. Forget security-camera footage - cops just need your thoughts."
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