"In the simplest possible terms, if the pattern of activity measured during one dream looks more like activity associated with viewing a person, compared to activity associated with seeing an empty street scene, then you should say that the dream probably contains a person, if you were forced to guess. This is the essence of their decoding algorithm. They use sophisticated ways to characterise patterns in fMRI activity (support vector machine), but essentially the idea is simply to match up, as best they can, the brain patterns observed during sleep with those measures during wakeful viewing of corresponding images."
Brain Box: In the news: Decoding dreams with fMRI
Oh, just researchers in Japan who can broadly guess at what you are dreaming about, if they can correlate the FMRI-revealed brain patterns with those produced when you’re look at specific images. NBD.
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