Just imagine being able to taste something without eating it at all. Well at the National University of Singapore, Nimesha Ranasinghe and his colleagues have constructed a device that simulates taste. They have aptly named it, the Digital Taste Simulator. It will be most intriguing where this will lead in the months and/or years to come. Maybe Tastavision to accompany 4D-Smellavision!
It works by sending tiny alternating currents and slight temperature changes into the tongue that fool it into "tasting" four flavors: sweet, salty, bitter, and sour. "We have found noninvasive electrical and thermal stimulation of the tip of the tongue successfully generates the primary taste sensations," Ranasinghe said.”