Familiarity with speech affects cortical processing of auditory distance cues and increases acuity.

The same trend was apparent in the comparison of English and backwards speech for both theta power (t(20) = 1.73, p = .10, Cohen’s d = .56) and for beta power (t(20) = 1.77, p = .092, Cohen’s d = .55), but contrasts were only marginally significant.

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