JAAA CEU Program

Questions refer to Tan et al, ‘‘Pitch Matching between Electrical Stimulation of a Cochlear Implant and Acoustic Stimuli Presented to a Contralateral Ear with Residual Hearing,’’ 187–199.

Learner Outcomes:

Readers of this article should be able to:

• Discuss how pitch perception changes after cochlear implantation.

• List two methods for evaluating nonsensory bias in pitch perception of individuals with cochlear implants.

1. One reason for success of a cochlear implant (CI) electrode design more responsive to lower frequencies apically, and more responsive to higher frequencies along the basal section, is that it:

   • mimics the tonotopic organization of the cochlea

   • improves frequency resolution

   • reduces the number of electrodes in the cochlea

2. An equation originally derived to estimate characteristic frequencies along the organ of Corti (OC) was published by:

   • Cohen et al (1996)

   • Greenwood (1990)

   • Tan et al (2012)

3. Cochlear implants stimulate neurons in the:

   • cochlear nuclei

   • organ of Corti

   • spiral ganglion (SG)

4. A check for nonsensory bias in pitch comparisons was based on:

   • correlations between starting frequency and final pitch match across runs

   • range of starting frequencies used between initial and final pitch matches

   • size of standard deviations between initial and final pitch match values

5. The Frequency Allocation Table (FAT) curve represents the:

   • frequency position function imposed by a CI

   • frequency position function prior to placement of a CI

   • pitch perception of normal-hearing listeners

6. The number of participants identified as demonstrating complete adaptation was:

   • one

   • two

   • five

7. Adaptation demonstrated by Participant Ten was categorized as:

   • complete

   • incomplete

   • near complete

8. For nearly every participant, pitch matching (PM) curves demonstrated frequency values ______ the SG curve.

   • equal to

   • higher than

   • lower than

9. About ____ of participants demonstrated PM curves identical or very close to their FAT curves.

   • one-third

   • one-half

   • three-fourths

10. Previous research cited by the authors reporting significant changes in PM over time included:

    • McDermott et al (2009)

    • Svirsky et al (2001)

    • Vermeire et al (2015)