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.

[1]  H. Tobi,et al.  Factors in subjective hearing disability. , 1995, Audiology : official organ of the International Society of Audiology.

[2]  E. Hess,et al.  Pupil Size in Relation to Mental Activity during Simple Problem-Solving , 1964, Science.

[3]  R. Plomp,et al.  Effects of fluctuating noise and interfering speech on the speech-reception threshold for impaired and normal hearing. , 1990, The Journal of the Acoustical Society of America.

[4]  P F Seitz,et al.  Assessing the Cognitive Demands of Speech Listening for People with Hearing Losses , 1996, Ear and hearing.

[5]  R Hétu,et al.  Qualitative analysis of the handicap associated with occupational hearing loss. , 1988, British journal of audiology.

[6]  J M Festen,et al.  The relationships between self-reported hearing disability and measures of auditory disability. , 1996, Audiology : official organ of the International Society of Audiology.

[7]  S Gatehouse,et al.  Response times to speech stimuli as measures of benefit from amplification. , 1990, British journal of audiology.

[8]  P. Wood,et al.  The International Classification of Impairments, Disabilities and Handicaps of the World Health Organization , 1990 .

[9]  D Kahneman,et al.  Pupil Diameter and Load on Memory , 1966, Science.

[10]  R Hétu,et al.  Impairment, disability and handicap in audiology: towards a consensus. , 1991, Audiology : official organ of the International Society of Audiology.

[11]  D. Kahneman,et al.  Evidence for Alternative Strategies of Sentence Retention , 1971, The Quarterly journal of experimental psychology.

[12]  E. Hess,et al.  Pupillometry: The Psychology of the Pupillary Response , 1978 .

[13]  O. Miettinen,et al.  Theoretical Epidemiology: Principles of Occurrence Research in Medicine. , 1987 .

[14]  B. Ford.  International Classification of Impairments, Disabilities and Handicaps , 1984, Releve epidemiologique hebdomadaire.

[15]  A. M. Mimpen,et al.  Improving the reliability of testing the speech reception threshold for sentences. , 1979, Audiology : official organ of the International Society of Audiology.

[16]  M E Demorest,et al.  Scale composition and item analysis of the Communication Profile for the Hearing Impaired. , 1986, Journal of speech and hearing research.