Estimating Audiometric Thresholds Using Auditory Steady-State Responses

2005 ◽  
Vol 16 (03) ◽  
pp. 140-156 ◽  
Author(s):  
Terence W. Picton ◽  
Andrew Dimitrijevic ◽  
Maria-Cecilia Perez-Abalo ◽  
Patricia Van Roon
Keyword(s):  
Steady State ◽  
Normal Subjects ◽  
Hearing Impaired ◽  
Elderly Subjects ◽  
Recording Time ◽  
Steady State Responses ◽  
Young Subjects ◽  
Auditory Steady State Responses ◽  
Intensity Functions ◽  
State Responses

Human auditory steady-state responses (ASSRs) were recorded using stimulus rates of 78–95 Hz in normal young subjects, in elderly subjects with relatively normal hearing, and in elderly subjects with sensorineural hearing impairment. Amplitude-intensity functions calculated relative to actual sensory thresholds (sensation level or SL) showed that amplitudes increased as stimulus intensity increased. In the hearing-impaired subjects this increase was more rapid at intensities just above threshold ("electrophysiological recruitment") than at higher intensities where the increase was similar to that seen in normal subjects. The thresholds in dB SL for recognizing an ASSR and the intersubject variability of these thresholds decreased with increasing recording time and were lower in the hearing impaired compared to the normal subjects. After 9.8 minutes of recording, the average ASSR thresholds (and standard deviations) were 12.6 ± 8.7 in the normal subjects, 12.4 ± 11.9 dB in the normal elderly, and 3.6 ± 13.5 dB SL in the hearing-impaired subjects.

scholarly journals Auditory Steady State Responses in Normal-Hearing and Hearing-Impaired Adults

2012 ◽  
Vol 33 (2) ◽  
pp. 267-278 ◽  
Author(s):  
Timothy S. Wilding ◽  
Colette M. McKay ◽  
Richard J. Baker ◽  
Karolina Kluk
Keyword(s):  
Steady State ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Steady State Responses ◽  
Auditory Steady State Responses ◽  
State Responses

Predicting Pure-Tone Thresholds with Dichotic Multiple Frequency Auditory Steady State Responses

2005 ◽  
Vol 16 (01) ◽  
pp. 005-017 ◽  
Author(s):  
Dunay Schmulian ◽  
DeWet Swanepoel ◽  
René Hugo
Keyword(s):  
Steady State ◽  
Pure Tone ◽  
Low Frequency ◽  
Tone Burst ◽  
Multiple Frequency ◽  
Recording Time ◽  
Steady State Responses ◽  
Pure Tones ◽  
Auditory Steady State Responses ◽  
State Responses

The accuracy of dichotic multiple frequency auditory steady state in predicting pure-tone thresholds at 0.5, 1, 2, and 4.0 kHz compared to an ABR protocol (click and tone burst at 0.5 kHz) were explored in a group of 25 hearing-impaired subjects across the degree and configuration spectrum. Mean steady state thresholds were within 14, 18, 15, and 14 dB of the pure tones at 0.5, 1, 2, and 4 kHz, compared to the tone-burst ABR at 0.5 kHz pure-tone difference of 24 dB, and a click-evoked pure-tone (2–4 kHz) difference of 9 dB. Recording time for the steady state protocol was 28 minutes (+/-11) compared to 24 minutes (+/- 9) of the ABR protocol. Degree of loss had a significant effect on steady state; configuration of hearing loss had a limited effect. Mf ASSR predicted thresholds with relative accuracy although some configurations showed discrepancies for low-frequency estimates.

scholarly journals Fast Hearing-Threshold Estimation Using Multiple Auditory Steady-State Responses with Narrow-Band Chirps and Adaptive Stimulus Patterns

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Roland Mühler ◽  
Katrin Mentzel ◽  
Jesko Verhey
Keyword(s):  
Steady State ◽  
Narrow Band ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Threshold Estimate ◽  
Multiple Frequency ◽  
Hearing Thresholds ◽  
Steady State Responses ◽  
Auditory Steady State Responses ◽  
State Responses

This paper describes the estimation of hearing thresholds in normal-hearing and hearing-impaired subjects on the basis of multiple-frequency auditory steady-state responses (ASSRs). The ASSR was measured using two new techniques: (i) adaptive stimulus patterns and (ii) narrow-band chirp stimuli. ASSR thresholds in 16 normal-hearing and 16 hearing-impaired adults were obtained simultaneously at both ears at 500, 1000, 2000, and 4000?Hz, using a multiple-frequency stimulus built up of four one-octave-wide narrow-band chirps with a repetition rate of 40?Hz. A statistical test in the frequency domain was used to detect the response. The recording of the steady-state responses was controlled in eight independent recording channels with an adaptive, semiautomatic algorithm. The average differences between the behavioural hearing thresholds and the ASSR threshold estimate were 10, 8, 13, and 15?dB for test frequencies of 500, 1000, 2000, and 4000?Hz, respectively. The average overall test duration of 18.6 minutes for the threshold estimations at the four frequencies and both ears demonstrates the benefit of an adaptive recording algorithm and the efficiency of optimised narrow-band chirp stimuli.

Estimating the Audiogram Using Multiple Auditory Steady-State Responses

2002 ◽  
Vol 13 (04) ◽  
pp. 205-224 ◽  
Author(s):  
Andrew Dimitrijevic ◽  
Sasha M. John ◽  
Patricia Van Roon ◽  
David W. Purcell ◽  
Julija Adamonis ◽  
...  
Keyword(s):  
Steady State ◽  
Correlation Coefficients ◽  
Behavioral Threshold ◽  
Behavioral Thresholds ◽  
Sensorineural Hearing Impairment ◽  
Steady State Responses ◽  
Auditory Steady State Responses ◽  
Tonal Stimuli ◽  
Conductive Hearing ◽  
State Responses

Multiple auditory steady-state responses were evoked by eight tonal stimuli (four per ear), with each stimulus simultaneously modulated in both amplitude and frequency. The modulation frequencies varied from 80 to 95 Hz and the carrier frequencies were 500, 1000, 2000, and 4000 Hz. For air conduction, the differences between physiologic thresholds for these mixed-modulation (MM) stimuli and behavioral thresholds for pure tones in 31 adult subjects with a sensorineural hearing impairment and 14 adult subjects with normal hearing were 14 ± 11, 5 ± 9, 5 ± 9, and 9 ± 10 dB (correlation coefficients .85, .94, .95, and .95) for the 500-, 1000-, 2000-, and 4000-Hz carrier frequencies, respectively. Similar results were obtained in subjects with simulated conductive hearing losses. Responses to stimuli presented through a forehead bone conductor showed physiologic-behavioral threshold differences of 22 ± 8, 14 ± 5, 5 ± 8, and 5 ± 10 dB for the 500-, 1000-, 2000-, and 4000-Hz carrier frequencies, respectively. These responses were attenuated by white noise presented concurrently through the bone conductor.

Sign in / Sign up

Export Citation Format

Share Document