The Telehealth program at East Carolina University has developed a system for real-time assessment of auditory thresholds using computer driven control of a remote audiometer via the Internet. The present study used 45 adult participants in a double-blind study of 2 different systems: a conventional audiometer and an audiometer operated remotely via the Internet. The audiometric thresholds assessed by these 2 systems varied by no more than 1.3 dB for air conduction and 1.2 dB for bone conduction. The results demonstrated the feasibility of this new "telehearing" audiometric system. With the rapid development of Internet-based applications, telehealth has the potential to provide important healthcare coverage for rural areas where specialized audiological services are lacking.
The purpose of this study was to examine telephone use among cochlear implant recipients. A questionnaire was constructed and mailed to 803 adults who received a Clarion cochlear implant system manufactured by Advanced Bionics Corporation. Questionnaire recipients were implanted at least 12 months prior to receiving the questionnaire (i.e., they were implanted in 1998 or 1999). Approximately 60% (n = 478) responded, of whom 70% (n = 336) were considered "telephone users" (i.e., they answered the telephone and/or initiated calls). Telephone users were significantly younger and had significantly more daily hours of cochlear implant use than nonusers. Not surprisingly, there were differences between groups with respect to method of communication (i.e., more users employed oral communication, while more nonusers employed both oral and manual communication) and ability to understand words without lipreading (i.e., more users were able to understand). Thirty-seven percent of the telephone users were male, and 63% were female. The average age was 51.8 years (SD = 15.5). Ninety-five percent of users initiated calls to family and friends, 65% made appointments by phone, and approximately 50% asked for information about a product or service and conducted business over the phone. Over 95% of users could identify a dial tone, a busy signal, and voices. The average telephone use per week was 5.4 hr. Approximately 85% indicated that they were able to interact with strangers on the telephone within 5 months of receiving the sound processor. Approximately 30% communicated via a cellular phone for personal use. The findings of this survey suggest an increase in cochlear implant users' telephone use relative to a decade earlier. Advances in cochlear implant and telephone technologies are 2 of several factors that may contribute to the changes observed.
The present study investigated the temporal processing abilities of college students with diagnosed reading disorders. A behavioral test battery was used that involved discrimination of the pattern of presentation of tone triads in which individual components differed in either frequency or duration. An additional test involving measurement of frequency difference limens for long- and short-duration tones was also administered. The college students with reading disorders exhibited significantly higher error rates in discriminating duration patterns than the normal reading group. No group differences were found for the frequency pattern discrimination task. Both groups exhibited larger frequency difference limens with the shorter 20- and 50-ms tones than with the 200-ms tones. Significant correlations were found between reading ability measures and temporal processing abilities, specifically in word recognition and duration pattern processing, suggesting a relationship between lower level auditory temporal processing skills and decoding efficiency.
The purpose of this study was to examine temporal resolution in normal hearing pre-school children. Word recognition was evaluated in quiet and in spectrally identical continuous and interrupted noise at signal-to-noise ratios (S/Ns) of 10, 0, and -10 dB. Sixteen children four to five years of age and eight adults participated. Performance decreased with decreasing S/N. At poorer S/Ns, participants demonstrated superior performance or a release from masking in the interrupted noise. Adults performed better than children, yet, the release from masking was equivalent. Collectively these findings are consistent with the notion that preschool children suffer from poorer processing efficiency rather than temporal resolution per se.
The project developed a remote hearing assessment system based on services on a web server. The system minimizes hardware and software requirements on the audiologist's computer and can be realized with regular Internet service subscription. Patient operations involved in hearing assessment are simple; making hearing test services more accessible to those otherwise may not be able to obtain the desired hearing care.
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