Does your tongue actually have a “taste-map”?
This one is particularly interesting because it has been part of science text books across the globe a couple decades ago. It claims that certain parts of the tongue are responsible for certain tastes (Ex: the tip of the tongue for tasting sweet). However, it was later proven that all parts of the tongue are capable of sensing all tastes albeit with different sensitivity.
Source – http://www.sciencelet.com/2013/03/10-popular-myths-busted.html