Biomedical subjects

T S Kapteyn

Publications and source records attributed to T S Kapteyn.

39 records · Page 3Linked to original sources

PubMedDate not supplied

Assessing aspects of auditory handicap by means of pupil dilatation.

The demand on extra effort and concentration during listening are notorious handicapping effects of hearing impairment as is shown by self-assessment studies. In an attempt to explore new ways of assessing hearing handicap, the present study focuses on an objective measure of mental effort during listening. Pupil dilatation is used as the index of mental effort. Results for 14 hearing-impaired and 14 normal hearing listeners show a relation between pupil dilatation and difficulty in speech reception in noise, as manipulated by the speech-to-noise ratio. In addition the study shows that, with regard to effort and concentration, hearing-impaired subjects benefit less than normals from easier listening situations (e.g. at 5 dB above the individual speech-reception threshold). The results show a significant correlation between self-rated handicap and pupil dilatation.

Adult↗

PubMedDate not supplied

Evaluation of fitting rules with a programmable hearing aid.

A study was performed with the 3M 8200 multi-programmable hearing aid in order to try to identify an optimal frequency-gain response, based on the standard calculation rules: NAL, POGO, Berger and Half gain. Furthermore, we examined to what extent multiple programs are used and appreciated. The 3M hearing aid was presented to 126 hearing-impaired patients for a trial period. The participants undertook several tests of speech intelligibility and sound quality. In comparison to the final settings after the trial period, it transpired that the NAL rule came f1p4est to the most used program and gave the best prediction of the gain at 1000 Hz. The attempt to optimize standard calculation rules according to indications made by the patients failed. The SRT-in-noise test showed improvements of the S/N ratio of 2.5 dB. The results of this study point towards separate processing of low- and high-frequency sounds as a useful concept.

Adult↗

PubMedDate not supplied

The self-reported handicapping effect of hearing disabilities.

This study investigates the extent to which individuals see themselves as being handicapped by a hearing disability. Self-reports were obtained with the Amsterdam Inventory for Auditory Disability and Handicap which distinguishes five basic disabilities: intelligibility in noise, intelligibility in quiet, localization of sounds, distinction of sounds and detection of sounds. Responses of 239 hearing-impaired people with varying types of hearing loss have been examined. The occurrence of the five disabilities in the population as well as the self-reported limiting and annoying effect per disability has been examined. This study shows that the handicapping effects of the disabilities do not have equal weights. Handicap resulting from the inability to understand speech in noise is most strongly felt. This paper argues that the type of disability jointly determines the severity of a person's handicap.

Adult↗