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. Author manuscript; available in PMC: 2009 Dec 10.
Published in final edited form as: Curr Biol. 2008 Apr 22;18(8):R331–R332. doi: 10.1016/j.cub.2008.02.045

Figure 2.

Figure 2

A. Mean fundamental frequencies of the two produced tones in tone-deaf listeners. The first tone had a target frequency at a constant 500Hz, whereas the second tone ranged from 450–550Hz. B. Same as A in normal controls. While both groups show a significant positive correlation between target and produced fundamental frequency, the correlation is significantly lower in the tone-deaf group (t(1,10) = 2.3, p = 0.046) and variability in pitch production is higher for the tone-deaf group, as indicated by a t-test comparing standard error across different subjects producing the same pitch: t(1,20) = 3.6, p = 0.0015. Error bars indicate between-subject standard error.