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Journal of Speech, Language, and Hearing Research Vol.41 1073-1087 October 1998.
© American Speech-Language-Hearing Association
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Speech Perception Performance in Experienced Cochlear-Implant Patients Receiving the SPEAK Processing Strategy in the Nucleus Spectra-22 Cochlear Implant

Aaron J. Parkinson 1
Wendy S. Parkinson 1
Richard S. Tyler 2
Mary W. Lowder 1

Bruce J. Gantz 1
1 Department of Otolaryngology-Head and Neck Surgery University of Iowa Iowa City
2 Departments of Otolaryngology-Head and Neck Surgery and Speech Pathology and Audiology University of Iowa Iowa City

aaronparkinson{at}uiowa.edu

Sixteen experienced cochlear implant patients with a wide range of speechperception abilities received the SPEAK processing strategy in the Nucleus Spectra-22 cochlear implant. Speech perception was assessed in quiet and in noise with SPEAK and with the patients' previous strategies (for most, Multipeak) at the study onset, as well as after using SPEAK for 6 months. Comparisons were made within and across the two test sessions to elucidate possible learning effects. Patients were also asked to rate the strategies on seven speech recognition and sound quality scales. After 6 months' experience with SPEAK, patients showed significantly improved mean performance on a range of speech recognition measures in quiet and noise. When mean subjective ratings were compared over time there were no significant differences noted between strategies. However, many individuals rated the SPEAK strategy better for two or more of the seven subjective measures. Ratings for "appreciation of music" and "quality of my own voice" in particular were generally higher for SPEAK. Improvements were realized by patients with a wide range of speech perception abilities, including those with little or no open-set speech recognition.

KEY WORDS: cochlear implants, SPEAK processing strategy, speech perception, speech processing strategies

Submitted on October 16, 1997
Accepted on July 2, 1998


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