Faculty Bibliography

Cochlear implant patients implanted with a programmable, 21-channel stimulator receive information about the dominant spectral peak in the midfrequency range (800-4000 Hz) encoded as electrode position. Three frequency-to-electrode position maps were tried, including one map where frequency-band boundaries were those frequencies that are midfrequency spectral peak boundaries between vowels, in an effort to increase vowel discrimination. Identification tests were not conclusive with respect to one map being better than the others for the three patients, but the two maps which had more electrodes representing lower frequencies were significantly better than the other map, when measured by discrimination tests