Search PubMed⌕ Search

Biomedical subjects

J F Jerger

Publications and source records attributed to J F Jerger.

28 records · Page 2Linked to original sources
PubMedDate not supplied

Development of a dichotic sentence identification test for hearing-impaired adults.

Third-order synthetic sentences were aligned to make them suitable for dichotic presentation. These dichotic sentence materials were then administered to 14 normal listeners and 48 hearing-impaired subjects to determine the influence of peripheral hearing loss on test performance. Results suggest that the Dichotic Sentence Identification test is resistant to the influence of peripheral hearing loss until the pure-tone average of 500, 1000, and 2000 Hz exceeds approximately 50 dB. Beyond this level, degree of peripheral hearing loss limits its value for detecting central auditory disorder. Data are also provided on six persons with either confirmed or suspected lesions involving retrocochlear structures.

Acoustics↗
PubMedDate not supplied

Evaluation of the minimal auditory capabilities (MAC) test in prelingual and postlingual hearing-impaired adults.

The Minimal Auditory Capabilities (MAC) battery was used to evaluate the auditory performance of nine postlingual and ten prelingual adults with severe to profound hearing loss. Results suggest that degree of hearing loss overrides relative language skills as the primary factor affecting performance. The MAC battery appears promising as a tool for evaluating and monitoring both prelingual and postlingual adults using conventional hearing aids or cochlear implants.

Adolescent↗
PubMedDate not supplied

Acoustic reflex averaging.

Signal averaging techniques have been applied to acoustic reflex measurement in order to meet the need for better temporal resolution and more accurate threshold delineation. We describe an approach to reflex measurement based on a signal averaging technique designed to examine both threshold and suprathreshold characteristics of the acoustic reflex. Results indicate that: (1) many supposed reflex threshold and latency aberrations are actually amplitude aberrations that are inappropriately classified because of instrumentation constraints; (2) reflex amplitude and waveform morphology can be recorded with appropriate fidelity using a signal averaging technique; (3) problems due to absolute amplitude variability can be minimized by using an index technique to assess amplitude relationships; (4) amplitude indices are sensitive indicators of neural pathology; (5) signal averaging and suprathreshold measurement of reflex amplitude and waveform morphology promise to enhance the sensitivity of acoustic reflex measurement.

Adult↗
PubMedDate not supplied

Cordless telephones and acoustic trauma: a case study.

Cordless telephones have been reported to cause irreversible damage to the ear due to acoustic trauma. The present case study reports an unusual audiometric configuration associated with direct exposure to the ring from a cordless phone. Although pure-tone sensitivity was only moderately affected, speech understanding was severely compromised.

Adult↗
PubMedDate not supplied

Central presbyacusis: a longitudinal case study.

An elderly patient with presbyacusis was tested on four occasions over a 9-year interval. Although there was little change in peripheral hearing sensitivity, central auditory function declined substantially. Diminished success as a hearing aid user seemed to parallel the change in central function. Results suggest that the central changes were auditory-specific rather than generalized cognitive in origin.

Aged↗