Biomedical subjects

C D Updike

Publications and source records attributed to C D Updike.

4 recordsLinked to original sources

PubMed1994

Comparison of FM auditory trainers, CROS aids, and personal amplification in unilaterally hearing impaired children.

The effectiveness of FM auditory trainers, conventional hearing aids, and CROS aids in six children with varying degrees of unilateral hearing loss was compared. Word recognition unaided and with each of the forms of amplification was evaluated both in quiet and in noise in a classroom. With the conventional hearing aid and CROS aid fittings, word recognition actually decreased in noise. With the FM trainer, word recognition improved significantly in both quiet and noise. All six unilaterally hearing impaired (UHI) children experienced significantly better performance with the FM trainer. The children with the most loss derived the greatest benefit.

Auditory Threshold↗

PubMed1992

Revised Craig Lipreading Inventory.

The two purposes of this study were to shorten the Craig Lipreading Inventory without affecting its reliability and validity and to establish normative data on the revised version. The full inventory was administered to 75 children. By item analysis, half of the items were selected to comprise the brief version; both versions were administered to another group of 75 children. Scores on the two versions correlated (.91 and .92, respectively, for Word Forms A and B and .97 and .95, respectively, for Sentence Forms A and B), thereby substantiating the construct validity of the briefer version. There was significantly high intertest reliability for the Word Forms (.80) and Sentence Forms (.82) of the briefer inventory. Normative data were computed for each age group. This briefer version is a temporally efficient tool for evaluating lipreading ability of children.

Aptitude↗

PubMed1990

Evaluation of the Craig Lipreading Inventory.

Responses to the Craig Lipreading Inventory have not been subjected to rigorous statistical analysis. No normative data currently exist. The purposes of this study were to evaluate the internal validity and interest reliability and to obtain normative data. The inventory was administered to 150 children, ages 3 to 8 yr. The internal consistency was very high for each subtest. Significant correlations were obtained among the subtests. Significant differences in scores were noted for the three age groups, indicating the need for standards at each age group. Preliminary Z-scores and percentile ranks were computed for each age group. It was concluded that the inventory is a valuable, reliable tool of lipreading evaluation in children.

Child↗

PubMed1986

Characteristics of the acoustic reflex in response to narrow bands of noise.

Normal-hearing young adults (5 M, 6 F) were exposed monaurally for 3 min to narrow-band noises centered at .5, 1, and 4 kc/s, at 20 db above respective acoustic reflex (AR) thresholds. Strip-chart recordings (1 mm/sec) of middle-ear muscle contractions were graphed and evaluated for peak amplitude, latency, adaptation, and recovery from contraction. The relative AR amplitude was greatest to the .5-kc/s band and decreased with increasing stimulus frequency. Women exhibited greater AR than men in response to the lowest frequency of stimulation. The AR latency was significantly faster for the .5-kc/s band, with no sex difference. AR adaptation increased with increasing stimulus frequency and markedly so for women in response to the mid- and high-frequency bands; but for men at all frequencies there was AR enhancement even after 3 min of stimulation. Finally, there were no significant overall differences in AR relaxation time either for men or women, though there was a significant sex by frequency interaction such that at 4 kc/s men's recovery was faster. Implications of these results were discussed relative to the research data on sex differences in TTS at different frequencies.

Acoustic Stimulation↗