Objective hearing tests for infants and young children during short hospitalization: Introduction of the system and evaluation of ABR, electrocochleography, auditory steady-state response and EABR

2005 ◽  
Vol 48 (2) ◽  
pp. 156-164
Author(s):  
Kozo Kumakawa ◽  
Kumiko Suzuki ◽  
Hidehiko Takeda ◽  
Masaaki Yamane ◽  
Yoshisato Tanaka ◽  
...  
Keyword(s):  
Steady State ◽  
Young Children ◽  
Steady State Response ◽  
Hearing Tests ◽  
State Response ◽  
Auditory Steady State Response ◽  
Objective Hearing Tests ◽  
Infants And Young Children

scholarly journals Comparative Study of the Auditory Steady-State Response (ASSR) and Click Auditory Brainstem Evoked Response (ABR) Thresholds among Filipino Infants and Young Children

2009 ◽  
Vol 24 (1) ◽  
pp. 9-12
Author(s):  
Laurence Ian C. Tan ◽  
Maria Rina T. Reyes-Quintos ◽  
Maria Leah C. Tantoco ◽  
Charlotte M. Chiong
Keyword(s):  
Hearing Loss ◽  
Steady State ◽  
Young Children ◽  
Auditory Brainstem Response ◽  
Auditory Brainstem ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response ◽  
Brainstem Response ◽  
Infants And Young Children

Objective: To compare the results of auditory steady-state response (ASSR) and click auditory brainstem response (click ABR) among infants and young children tested at the Ear Unit of a Tertiary General Hospital.   Methods: Design: Cross-sectional Study Setting: Tertiary General Hospital Population: Within-subject comparisons of click auditory brainstem response (click ABR) thresholds and auditory steady-state response (ASSR) thresholds among 55 infants and young children, 2 months to 35 months of age referred to the Ear Unit for electrophysiologic hearing assessment. Results: Click ABR showed strong positive correlation to all frequencies and averages of ASSR. Highest correlation was noted with the average of 1-4 kHz ASSR results with Pearson r = 0.89 (Spearman r=0.80), the average of 2-4 kHz had strong positive correlation r = 0.88 (0.79). Correlation was consistently strong through all ASSR frequencies (0.5 kHz at r=0.86 (0.74), 1 kHz at r=0.88 (0.78), 2 kHz at r=0. 87 (0.79), 4 kHz at r=0.85 (0.76)). Average differences of click ABR and ASSR thresholds were 8.2±12.9dB at 0.5 kHz, 8.6±12.6dB at 1 kHz, 5.3±11.8dB at 2 kHz and 7.8±13.4dB at 4 kHz. Among patients with no demonstrable waveforms by click ABR with maximal click stimulus, a large percentage presented with ASSR thresholds. Of these, 80.5% (33 of 41) had measurable results at 0.5 kHz with an average of 107.3±11.1dB, 85.4% (35 of 41) at 1 kHz with an average of 110.5±11.8dB, 73.2% (30 of 41) at 2 kHz with an average of 111.2±11.1dB and 63.4% (26 of 41) at 4 kHz with and average of 112.2±8.21dB. Auditory steady-state response results were comparable to auditory brainstem response results in normal to severe hearing loss, and provided additional information necessary for complete audiologic assessment especially among patients with severe to profound hearing loss wherein click ABR showed no responses. Up to 85.4% of patients that would have been noted to have no waveforms by click ABR still demonstrated measurable thresholds by ASSR   Conclusion: Our study suggests that ASSR may be the best available tool for assessing children with severe to profound hearing loss, and is a comparably effective tool in overall hearing assessment for patients requiring electrophysiological testing. The advantages of ASSR over click ABR include: 1) detection of frequency-specific thresholds and; 2) the detection of hearing loss thresholds beyond the limits of click ABR.     Key words: Auditory Steady-State Response, ASSR, Auditory Brainstem-Evoked Response, ABR, Hearing Thresholds, Electrophysiologic Testing  

Air-bone gap estimated with multiple auditory steady-state response in young children with otitis media with effusion

2013 ◽  
Vol 40 (6) ◽  
pp. 534-538 ◽  
Author(s):  
Hinami Nagashima ◽  
Jiro Udaka ◽  
Izumi Chida ◽  
Aki Shimada ◽  
Eiji Kondo ◽  
...  
Keyword(s):  
Steady State ◽  
Young Children ◽  
Otitis Media ◽  
Otitis Media With Effusion ◽  
Steady State Response ◽  
State Response ◽  
Auditory Steady State Response

scholarly journals Auditory Steady State Response (ASSR) Frequency-Specific Thresholds with Absent Auditory Brainstem Response (click-ABR) Test Results among Filipino Children

2014 ◽  
Vol 29 (2) ◽  
pp. 7-9
Author(s):  
Romeo L. Villarta ◽  
Maria Luz M. San Agustin
Keyword(s):  
Steady State ◽  
Auditory Brainstem Response ◽  
Auditory Brainstem ◽  
Steady State Response ◽  
Hearing Tests ◽  
Profound Hearing Loss ◽  
State Response ◽  
Auditory Steady State Response ◽  
Filipino Children ◽  
Brainstem Response

Objective: Determine the frequency-specific thresholds of auditory steady state response (ASSR) of Filipino children with absent auditory brainstem response (click-ABR) results.   Methods: This is a cross-sectional study analyzing the frequency-specific thresholds of auditory steady state response (ASSR) of Filipino children with absent auditory brainstem response (click-ABR) results. The study population comprised of 99 pediatric patients referred for hearing assessment using electrophysiologic techniques at the Ear Unit of the Philippine General Hospital. The subjects underwent hearing threshold evaluation using both evoked-potential techniques (click ABR and ASSR) within a 1-month period from January 2009 to March 2014. The ASSR results of patients with absent click-ABR were collected and analyzed. Results: There were 99 patients who underwent both ABR and ASSR. Of the 65 patients with absent ABR thresholds results, 13 patients had unilateral absent ABR while 52 had bilateral absent ABR results. The data of hearing tests from the combined 117 ears with absent ABR hearing tests were collected. The proportion of children with ASSR thresholds with absent ABR per frequency were: 500 Hz - 45/117 (38.5 %); 1000 Hz - 76/117 (64.0 %); 2000 Hz - 63/117 (53.8 %); and 4000 Hz - 41/117 (35.0 %). The proportion of children with ASSR thresholds with absent ABR per number of frequencies were: 4 frequencies - 19/117 (16.2 %); 3 frequencies - 32/117 (27.4 %); 2 frequencies - 22/117 (18.8 %); and 1 frequency - 44/117 (37.6%) Conclusion: In the absence of click- ABR response, ASSR may provide information about the levels of severe to profound hearing loss among children.  The criteria of selection of candidates for intervention (hearing aids or cochlear implantation) should include results from hearing evaluation not only from behavioral and ABR thresholds but also from ASSR thresholds.  This may ensure that exclusion of some children with severe and profound hearing loss who may benefit from the intervention will be minimized.   Keywords: profound sensorineural deafness, evoked response audiometry, hearing thresholds  

The Auditory Steady-State Response: Full-Term and Premature Neonates

2002 ◽  
Vol 13 (05) ◽  
pp. 260-269 ◽  
Author(s):  
Barbara Cone-Wesson ◽  
John Parker ◽  
Nina Swiderski ◽  
Field Rickards
Keyword(s):  
Steady State ◽  
Premature Infants ◽  
Modulation Frequency ◽  
Otoacoustic Emission ◽  
Full Term ◽  
Steady State Response ◽  
Pass Rates ◽  
Term Infants ◽  
State Response ◽  
Auditory Steady State Response

Two studies were aimed at developing the auditory steady-state response (ASSR) for universal newborn hearing screening. First, neonates who had passed auditory brainstem response, transient evoked otoacoustic emission, and distortion-product otoacoustic emission tests were also tested with ASSRs using modulated tones that varied in frequency and level. Pass rates were highest (> 90%) for amplitude-modulated tones presented at levels ≥ 69 dB SPL. The effect of modulation frequency on ASSR for 500- and 2000-Hz tones was evaluated in full-term and premature infants in the second study. Full-term infants had higher pass rates for 2000-Hz tones amplitude modulated at 74 to 106 Hz compared with pass rates for a 500-Hz tone modulated at 58 to 90 Hz. Premature infants had lower pass rates than full-term infants for both carrier frequencies. Systematic investigation of ASSR threshold and the effect of modulation frequency in neonates is needed to adapt the technique for screening.

Decreased Gamma Auditory Steady-State Response Is Associated With Impaired Real-World Functioning in Unmedicated Patients at Clinical High Risk for Psychosis

2020 ◽  
pp. 155005942098270
Author(s):  
Sarah Ahmed ◽  
Jennifer R. Lepock ◽  
Romina Mizrahi ◽  
R. Michael Bagby ◽  
Cory J. Gerritsen ◽  
...  
Keyword(s):  
Steady State ◽  
High Risk ◽  
Functional Impairment ◽  
Real World ◽  
Steady State Response ◽  
Clinical High Risk ◽  
State Response ◽  
Auditory Steady State Response ◽  
Gamma Synchrony ◽  
40 Hz

Aim Deficits in synchronous, gamma-frequency neural oscillations may contribute to schizophrenia patients’ real-world functional impairment and can be measured electroencephalographically using the auditory steady-state response (ASSR). Gamma ASSR deficits have been reported in schizophrenia patients and individuals at clinical high risk (CHR) for developing psychosis. We hypothesized that, in CHR patients, gamma ASSR would correlate with real-world functioning, consistent with a role for gamma synchrony deficits in functional impairment. Methods A total of 35 CHR patients rated on Global Functioning: Social and Role scales had EEG recorded while listening to 1-ms, 93-dB clicks presented at 40 Hz in 500-ms trains, in response to which 40-Hz evoked power and intertrial phase-locking factor (PLF) were measured. Results In CHR patients, lower 40-Hz PLF correlated with lower social functioning. Conclusions Gamma synchrony deficits may be a biomarker of real-world impairment at early stages of the schizophrenia disease trajectory.

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