Blind people use screenreader software sped up so fast as to be indecipherable to untrained ears. The screenreader can give them near instantaneous feedback about where on the screen they are and what's there when it's so sped up, and with a bit of practice perceiving the sped-up speech imposes no burden at all.
I can tell from experience that when I lay down in my bed with my eyes closed I could comprehend speech at much higher speed than I would while walking on the street. No surprise blind people can handle it better even though I have no clue how exactly it work in relations to the brain.
I was always curios to make actual research / paper on this kind of thing, but as non-scientist I simply have no time to do so. So I happy someone actually doing it.
