The five taste sensations are sweet, sour, salty, bitter, and umami (the flavor of glutamates). Though it is true that tongue receptors can identify five basic sensations, they are not divided into sections on the tongue; it can taste all five anywhere on it nearly equally. For example, you do not only taste salt when it is placed on one are of your tongue. You can discern any flavor at any point where taste receptors exist (34, 35).
(source 36)
Sense-sational 