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The role of domain knowledge in the process of hypothesis generation during diagnostic reasoning was examined. Subjects were given a clinical case presented one segment at a time on a microcomputer. They were prompted to think aloud after presentation of each segment of the clinical case. A combination of discourse and protocol analysis techniques was used(More)
The auditory midbrain implant (AMI), which is designed for stimulation of the inferior colliculus (IC), is now in clinical trials. The AMI consists of a single shank array (20 contacts) and uses a stimulation strategy originally designed for cochlear implants since it is already approved for human use and we do not yet know how to optimally activate the(More)
OBJECTIVE To evaluate the stability of long-term hearing performance after cochlear implantation (CI) in postlingually deafened adults and to explore the boundaries and limitations of the present test batteries for adult CI patients. STUDY DESIGN Case series with chart review. SETTING Tertiary referral center. SUBJECTS AND METHODS A cohort of 1005(More)
CONCLUSION The CustomSoundEP software can record ECAP traces in an automated manner and calculate the ECAP threshold from them. These values are in good agreement with those determined by audiologists. Manual optimization measurements, as needed when using the predecessor version 3 of the software, are done by the software itself in the newer system. (More)
OBJECTIVES/HYPOTHESIS To evaluate the hearing performance with cochlear implants (CIs) in patients who were 70 years or older at the time of implantation (geriatric patients) and compare it with the performance in younger adults. STUDY DESIGN Individual, retrospective, cohort study. METHODS A cohort of 1,005 postlingually deafened adults was selected(More)
The cochlear implant can restore speech perception in patients with sensorineural hearing loss. However, it is ineffective for those without an implantable cochlea or a functional auditory nerve. These patients can be implanted with the auditory brainstem implant (ABI), which stimulates the surface of the cochlear nucleus. Unfortunately, the ABI has(More)
INTRODUCTION More than 3,000 patients have received a cochlear implant in Hannover. METHODS A group of 864 patients was selected from the main group for the analysis of speech perception development. Depending on the term of introduction of new implant technology, the viewed group was divided into 5 subgroups. RESULTS The test battery during regular(More)
OBJECTIVES/HYPOTHESIS To evaluate the role of gender on the hearing performance of postlingually deafened adult patients with cochlear implants. STUDY DESIGN Individual retrospective cohort study. METHODS There were 638 postlingually deafened adults (280 men and 358 women) selected for a retrospective evaluation of their hearing performance with(More)
A topographical representation for frequency has been identified throughout the auditory brain in animals but with limited evidence in humans. Using a midbrain implant, we identified an ordering of pitch percepts for electrical stimulation of sites across the human inferior colliculus (IC) that was consistent with the IC tonotopy shown in animals. Low(More)
OBJECTIVES/HYPOTHESIS To evaluate the effect of technological advances in the past 20 years on the hearing performance of a large cohort of adult cochlear implant (CI) patients. STUDY DESIGN Individual, retrospective, cohort study. METHODS According to technological developments in electrode design and speech-processing strategies, we defined five(More)