$~~~~$Researchers from a university in Japan have developed “diet-glasses” that play tricks with one’s perception of food, which could be helpful to people on a diet. A camera and a viewing system are built 26 these glasses. As the wearer brings the food toward their mouth, the camera captures an image of the food. It replays the image back through the glasses after processing it on an attached computer. The size of the food they are about to eat is magnified while 27 of their hand remains normal. Their brain is 28 tricked into thinking they are eating more than they really are. The study showed that participants who wore the glasses ate 9.3% less than those who did not wear them.
$~~~~$RThe team has also developed a special device which uses scent bottles and visual trickery to make the wearers of these glasses think that the plain snack they are eating is 29 than it actually is. The device, for instance, can be set to 30 one’s favorite flavor. Recent experiments with this device showed that 80% of the participants were fooled by the smell. For example, some participants thought that they were eating a chocolate snack, but in fact they were not.