PubMed Health⌕ Search

Biomedical subjects

E C Sheeley

Publications and source records attributed to E C Sheeley.

7 recordsLinked to original sources
PubMed1987

Effects of three contralateral maskers on pure-tone thresholds using manual audiometry.

This study investigated how central masking associated with low-level maskers would affect thresholds obtained using a standard clinical technique. Signals included 500, 1,000, 2,000, and 4,000 Hz; maskers, presented at 40 dB SL, consisted of (a) a wideband masker (WBM), (b) a narrow-band masker (NBM) centered about each signal frequency, and (c) a pure-tone masker (PTM) identical to each signal. Only the PTMs caused significant threshold shifts, that is, poorer masked thresholds. The WBM and NBMs caused no shift 60% of the time and a 5-dB threshold improvement 16% of the time. The findings weigh against the clinical use of a central-masking correction when a low-level WMB or NBM is used.

Acoustic Stimulation↗
PubMed1980

Impedance measures and pure-tone screening of college students.

Normative data from tympanometry and static compliance measures were presented for 355 freshmen entering college. Only one ear was tested. A lax criterion in tympanometry yielded a failure rate of 4%; pure-tone screening (20 db at 1 and 2 kc/s, 25 db at 4 kc/s) yielded a failure rate of 8%. In 90% of Ss the impedance (lax criterion) and pure-tone screening tests agreed in identifying an ear as normal or abnormal. Excluding 5% of the cases at each end of the continuum, 90% had static compliance in the range 0.30-1.15 cc; the middle 62% had compliance values of 0.45-0.89 cc. The distribution of tympanogram types and static compliance values were not significantly different for men and women, or for R and L ears. Impedance measures and pure-tone thresholds disagreed half the time on "Pass" and "Fail," although they showed the same proportions of "Pass" and "Fail," suggesting that two different aspects of hearing were being assessed.

Acoustic Impedance Tests↗
PubMedDate not supplied

Predicting hearing sensitivity and audiometric slope for mentally retarded persons.

The sensitivity prediction from the acoustic reflex (SPAR) test was administered to 90 subjects who were classified according to four levels of mental retardation and five levels of hearing sensitivity. SPAR results showed accurate hearing level prediction for 58% of the subjects, one-category errors for 29%, and two- or three-category errors for 13%. Audiometric slope predictions were also made and were accurate 58% of the subjects. SPAR results indicated that the greater the hearing loss, the less likely that normal hearing would be predicted. Hearing level predictions for the retarded population were of comparable accuracy but slightly poorer than those previously reported for the nonretarded. The SPAR is suggested as a useful addition to the audiologist's repertoire, particularly for retarded individuals who are difficult to test.

Acoustic Impedance Tests↗
PubMedDate not supplied

Guest editorial: the audiologist as advocate.

An advocacy process, utilizing the audiologist as advocate, is proposed for auditorily impaired individuals, with six stages: personal contact, assessment, recommendations, implementation, follow-through, and follow-up. The advocacy program is illustrated by general guidelines and by a specific example. The advocacy process enables the hearing-impaired individual to become more independent through individualized programming.

Adolescent↗