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Rhythmic discrimination fovea?

Hi list,

consider a rhythm like (a) 2 1 1 2 1 1 in contrast to one like (b) 3 2 2 3 2 2 or
(c) 5 2 2 5 2 2 ...

(a) is an "equal" rhythm with one long and two shorts that add up to the long. In (b) & (c), the "shape" is the same, but the shorts don't add up to the long.

Now scale all rhythms so that their cycles have the same durations, and varying the
the tempo, play pairs to listeners and get "same/different" judgements.

Question: what is the range of tempo in which such judgments would be most accurate?

Thanks for pointers to existing research or ideas.


-- eliot