Mean identification performance (in chance-corrected RAU) across CI subjects (8 implanted ears, black bars) and 5 NH subjects (open bars) for six different processing conditions. Error bars show ± one standard error across subjects.
Relationship between FM-1band condition scores and Intact condition scores for CI users. Linear regression is represented by the solid line.
Phonetic feature reception for CI subjects (open triangles) and for 5NH listeners (closed circles). The CI data are taken from five ears implanted with AB devices. The 5 NH subjects were tested with an acoustic simulation of an 8-channel CIS strategy of AB devices. The top, middle, and bottom panels show the results obtained for the reception of voicing, manner, and place of articulation, respectively.
Mean correlation coefficients computed (across 16 consonants) between the pulse-trains’ temporal envelopes of Intact stimuli and AM, FM-8 bands, FM-4 bands, FM-2 bands, and FM-1 band stimuli. Electrode 8represents the highest frequency channel. Error bars show ± one standard error across sixteen consonants.
Cutoff frequencies for Advanced Bionics (AB) and Cochlear devices as a function of the number of bands. All AB device users used HiRes90K implants and all Cochlear device users used Nucleus 24 implants as listed in Table I.
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