They say a picture is worth a thousand words, but one study shows that a picture may be worth far more than that. In fact, when subjects were shown vivid photographic images of hot buttered popcorn, brain scans showed that the same part of their brain lit up as if they were actually eating the popcorn. When asked a week later what they thought of the popcorn, the study participants responded that they remember that it tasted great, as if they had actually eaten the popcorn.