Okay, I googled fermented grains, and it was quite interesting, found out a lot I never knew, going to research this further.
What I found out nutritionally, it does not change the nutrient content of the grain, but there is a substance in the grain that inhibits nutrient absorbtion by both animal and humans alike, the soaking/fermenting of the grains including flours for human consumption, neutralizes this substance making the nutrients digestable.
This was done extensively by almost all cultures in the past, just in our recent immediate type lifestyle this has changed, along w/ a huge surge in digestion problems.
In addition to the already mentioned fermenting starters you can also use buttermilk, or cidar vinegar, the point is to increase the acid level to neutralize the substance (sorry can't remember it's name).
It was also mentioned, those who have trouble digesting some grains have found they can digest them after fermenting. I have been gluten free for years so found this extremely interesting.