The click-ABR and ASSR have strong and statistically significant

The Auditory Steady-State Response (ASSR) is
similar to auditory brainstem response (ABR) in many ways. However, there are
some differences. When comparing the ASSR and ABR some issues should be
considered: frequency specificity, response generators, the effects of hearing
loss, and the automatic detection algorithms. The following table compares ASSR
and ABR in theses aspects:ASSR overcome this
limitation; due to that the response is evoked by a pure tone that are amplitude
and/or frequency modulated.Lack of frequency specificity Measurement of the response phase spectrum is used to estimate
response latency. Phase is used to characterize the latency range of the
response.dominated by evoked
potential neural generators responsible for the late cortical evoked potential.Measures of phase
coherence, magnitude squared coherence or the fast Fourier transform of the
response subjected to a variance ratio test.Correlation, template
matching, or estimating the signal-to-noise ratio (SNR) from the variance of a
single point.  

     Two studies were
reported in which the threshold estimates from auditory responsive tests; the
ASSR in compression to the ABR. The first study was a retrospective review
comparing ASSR and ABR results in fifty-one cases of infants and children, demonstrated
both the click-ABR and the ASSR by using either visual reinforcement audiometry
or play audiometry. Then, comparing between the ABR threshold with each
audiometric threshold (both in dB HL) and between ASSR thresholds and
audiometric thresholds (both in dB HL). The results show that both click-ABR
and ASSR have strong and statistically significant correlations with the
pure-tone audiogram in infants and children with various degrees of hearing
loss. The second study was a prospective review of ten normal hearing adult
females, demonstrated tone burst-ABR and modulated tone ASSR. The results show
that tone-burst ABR and ASSR could both be used to estimate hearing threshold
but that the stimulus used and detection method the threshold determination.1- Infants and children were tested using age appropriate

We Will Write a Custom Essay Specifically
For You For Only $13.90/page!

order now

2-All testing was carried out in double-walled, sound-attenuated

3- This study contains correlation between,
ASSR, ABR, and the behavioral threshold.1-Excluding any intervals between the ABR, ASSR, and behavioral
threshold tests if greater than 24 months.2- Variation in hearing loss types.

3- Variation in age range.

4- This study suggests that both c-ABR and ASSR
threshold estimates can be used to predict pure-tone threshold for infants and
children with variate normal hearing and hearing loss ranges.1-ASSR determination of residual hearing for those with severe to profound
and profound hearing losses.

2-This study includes findings for modulated frequency (MF) at 41
Hz, as well as for high MFs, depending on the test tone frequency.

3- The location of the study where the study is done
isn’t mentioned.1-The majority of the participants were awake at the end of the

2- Only one ear was tested.

3-No U.S. Food and Drug Administration approved
on the ASSR technique.