J Am Acad Audiol 2019; 30(06): 544-545
DOI: 10.3766/jaaa.306CEU
JAAA CEU Program
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

JAAA CEU Program

Volume 30, Number 6 (June 2019)
Further Information

Publication History

Publication Date:
25 May 2020 (online)


    Questions refer to Spankovich et al, “Early Indices of Reduced Cochlear Function in Young Adults with Type-1 Diabetes Revealed by DPOAE Fine Structure,” 459–471.

    Learner Outcomes:

    Readers of this article should be able to:

    • Discuss the evidence of compromised cochlear function in persons with type-1 diabetes.

    • Summarize the source components of DPOAE fine structure based on the two-source theory.

    • Consider the potential application of DPOAE fine structure in detecting early indices of cochlear pathology.

    CEU Questions:

    1. The literature has shown that OAE amplitudes in persons with type-1 diabetes are:

      • consistently reduced compared to controls

      • consistently higher compared to controls

      • contradictory with some studies showing reduced amplitude and others no difference

    2. The OAE fine-structure source related to linear reflection and believed to dominate the TEOAE response is the:

      • distortion component

      • reflection component

      • generator component

    3. The OAE fine-structure component that pertains to the non-linear element is called the:

      • distortion component

      • reflection component

      • deflection component

    4. The DPOAE fine-structure stimuli presented in this study were performed using what kind of stimuli?

      • fixed frequency

      • sweeping frequency

      • mixed frequency

    5. The DPOAE-level paradigm that was developed to maximize the overlap of the stimuli with changing levels is called the:

      • scissor paradigm

      • ladder paradigm

      • sound paradigm

    6. The OAE fine-structure component that showed a significant difference between persons with type-1 diabetes compared to controls was:

      • the reflection component

      • the distortion component

      • the middle-ear muscle reflex

    7. Which measure showed a significant difference between persons with type-1 diabetes and controls?

      • standard clinical DPOAEs

      • standard clinical TEOAEs

      • DPOAE fine structure

    8. The results in Figure 5 show that the overall DPOAE response is very comparable in amplitude compared to which component?

      • the distortion component

      • the reflection component

      • the middle-ear muscle reflex

    9. In regard to stimulus level, how was stimulus level related to the number of fine-structure peaks?

      • more peaks with higher stimulus levels

      • more peaks with lower stimulus levels

      • no difference in peak count with change in level

    10. The major limitation of performing DPOAEs to obtain fine structure with standard fixed-frequency stimuli is:

      • cost

      • time

      • lack of code


    No conflict of interest has been declared by the author(s).