Relationship between loudness growth function and auditory steady-state response in normal-hearing subjects

The present study investigates the relationship between auditory steady-state responses (ASSRs) and loudness growth function. ASSR amplitudes were compared to the perceived loudness level at frequencies of 500 and 2000 Hz in 11 normal-hearing subjects. As a first step, loudness growth function was e...

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Bibliographic Details
Published in:Hearing research 2008, Vol.235 (1), p.105-113
Main Authors: Ménard, Mikaël, Gallégo, Stéphane, Berger-Vachon, Christian, Collet, Lionel, Thai-Van, Hung
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adult
Audiometry, Evoked Response
Auditory Perception
Auditory Threshold
Biological and medical sciences
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology
Electroencephalography
Evoked Potentials, Auditory
Female
Fundamental and applied biological sciences. Psychology
Hearing - physiology
Humans
Linear Models
Loudness level
Loudness Perception
Male
Medical sciences
Models, Biological
Non tumoral diseases
Objective responses
Otorhinolaryngology. Stomatology
Psychoacoustic measures
Psychoacoustics
Reference Values
Vertebrates: nervous system and sense organs
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Summary:The present study investigates the relationship between auditory steady-state responses (ASSRs) and loudness growth function. ASSR amplitudes were compared to the perceived loudness level at frequencies of 500 and 2000 Hz in 11 normal-hearing subjects. As a first step, loudness growth function was estimated for the two test frequencies. Then ASSR amplitude was recorded for each of the two frequencies at different stimulus intensities, each corresponding to a loudness level as given by the first part of the study. Normalized results show that the ASSR amplitude correlates well with the loudness function ( R 2 = 0.81). A stepwise multiple linear regression confirmed these results with loudness explaining almost all the ASSR amplitude (loudness R 2 = 0.81, p < 0.001, f = 562 and for intensity f = 1.1, p = 0.29). The non-linearity of the ASSR amplitude for low loudness levels can be explained by both the active amplification in the cochlea and the noise in the recording. The results suggest that ASSRs can be used for “objective” loudness measurement.
ISSN:0378-5955
1878-5891
DOI:10.1016/j.heares.2007.10.007