Frequency acuity and binaural masking release in dyslexic listeners

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Abstract
Two experiments compared auditory sensitivity in a group of 12 adult dyslexics and matched control listeners. The first experiment measured frequency discrimination and frequency modulation detection thresholds at both 1 and 6 kHz. Although thresholds were larger for the dyslexic group, the differences were not statistically reliable. The second experiment measured the binaural masking level difference for a 200 Hz pure tone in noise. Thresholds did not differ significantly between the two groups. The data provide little support for the hypothesis that dyslexic listeners are impaired in their ability to process information in the temporal fine structure of auditory stimuli.

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