Areas of the tongue and different tastes - myth?

I was reading this old Cecil column about salt and pepper and Cecil mentions “the salt-sensing taste buds at the tip of the tongue”.

I could have sworn that the idea that different parts of the tongue were responsible for different tastes (salt, sweet, sour, etc) had been debunked, even though the idea and the same picture showing the areas still shows up in modern texts and webpages. But a web search came up with nothing, and a SDMB search came up with this thread from about a year and a half ago asking the very same question, but no clear answer.

I did a quick experiment with salt, and I clearly tasted it on the back of my tongue, and the sides near the back.

Did I catch Cecil in an error? I’d have put this in the “Comments on Cecil’s Columns” forum but the column wasn’t really about this. Plus, I think the question needs the traffic of GQ to get answered (although it didn’t do the trick in the other thread). Of course, if the mods decide to move this, it’s their call.

No knowledge to impart…but I always thought the tip of the tongue had the sweet receptors, and the back the salt.

All of your tastesbuds are capable of tasting all four tastes (sweet, salt, sour, bitter), but ones on certain areas of the tongue are more sensitive to one taste over the others.

There are actually five kinds of taste receptors, the recently-discovered fifth one, called “umami,” being to MSG.

From here

From here

Excellent Colibri, thank you.