Tag Archives: auditory

A quick summary on the benefits of bilateral hearing aid use

Here’s a quick summary on the benefits of bilateral hearing aid use. This is the last in the series on bilateral vs. unilateral hearing aids. The next series will focus on outcome measures, ranging from tried and true with the SSQ to new and spry with the TFI.

October Blog

Mencher, G.T. & Davis, A. (2006). Bilateral of unilateral amplification: is there a difference? A brief tutorial.International Journal of Audiology 45 (S1), S3-11.

Are you prescribing an appropriate MPO?

Appropriate prescription of MPO is an often overlooked parameter. A fair amount of research exists that would suggest inappropriate application of MPO will significantly decrease the likelihood of hearing aid acceptance. In this article review Dr. Kuk and colleagues discuss some possible negative outcomes related to the under-prescription of MPO. The authors go on to suggest that the addition of digital noise reduction may mitigate some of these negative outcomes.


Kuk, F., Peeters, H., Korhonen, P. & Lau, C. (2010). Effect of MPO and noise reduction on speech recognition in noise. Journal of the American Academy of Audiology, submitted November 2010.

Are our fine-tuning adjustments consistent with the patient’s complaints?

In this throwback to 2003 Jenstad and colleagues completed a study that evaluated consistency in interpretation of patient complaints and the actions that would be taken to address these complaints. Their findings show excellent agreement between the interpretation and subsequent actions made by two independent groups of survey respondents.


Jenstad, L.M., Van Tasell, D.J. & Ewert, C. (2003). Hearing aid troubleshooting based on patient’s descriptions. Journal of the American Academy of Audiology 14 (7).

Recommendations for fitting patients with cochlear dead regions

Clinically many audiologists may struggle with deciding how to best to prescribe hearing aids when a patient has been diagnosed with cochlear dead regions. The September blog update discusses a recent article from Dr. Robyn Cox and colleagues at the University of Memphis. The authors completed a large scale study, evaluating some outcomes for patients who were diagnosed with cochlear dead regions. Their conclusions offer direction for the fitting of hearing aids.


Cox, R.M., Alexander, G.C., Johnson, J. & Rivera, I. (2011).  Cochlear dead regions in typical hearing aid candidates: Prevalence and implications for use of high-frequency speech cues. Ear & Hearing 32 (3), 339-348.

Awash in a stream of wireless solutions

This month’s issue of Audiology Practices includes an article that discusses methods for streaming audio (television and telephone) to modern hearing aids. With multiple options for wireless communication with hearing aids selecting among these technologies can feel daunting.

Awash in a stream of wireless solutions

Galster, J.A. (2011). Awash in a stream of wireless solutions. Audiology Practices, 3(2), 26-29.


Will placing a receiver in the canal increase occlusion?

Have you ever wondered if those boxy receivers on RIC products increase objective or subjective occlusion? In this article summary we discuss observations from Vasil-Dilaj and Cienkowski, who find that most receivers are not sufficiently occluding to have a negative impact.


Vasil-Dilaj, K.A., & Cienkowski, K.M. (2010). The influence of receiver size on magnitude of acoustic and perceived measures of occlusion. American Journal of Audiology, 20, 61-68.


Impact of Classroom Noise on Children’s Listening

This month’s article review discusses:

Howard, C. S., Munro, K. & Plack, C. J. (2010). Listening effort at signal-to-noise ratios that are typical of the school classroom.  International Journal of Audiology, 49, 928-932.


It’s no surprise that classroom noise impacts children’s speech understanding, attention and learning ability. Researchers at Cambridge and Manchester universities documented the listening effort required for children between the ages of 9 and 12 to listen at noise levels found in typical classrooms. The authors conclude that increasing noise level increases the effort that students must expend when listening to their teachers.

Understanding the benefits of bilateral hearing aids

This month’s article review discusses:

A Prospective Multi-Centre Study of the Benefits of Bilateral Hearing Aids

Boymans, M., Goverts, S.T., Kramer, S.E., Festen, J.M. & Dreschler, W.A. (2008). A prospective multi-centre study of the benefits of bilateral hearing aids. Ear and Hearing 29(6), 930-941.


For many people that work in hearing related professions it’s difficult to believe that someone in need of two hearing aids would consider using a single hearing aid. This is an outdated philosophy. Yet some governments only provide a single hearing aid to those in need of two, often citing outdated or ancillary literature. The authors of this study do an excellent job, with a large group of participants, of documenting some benefits of using two hearing aids.

Publications in 2010

Twenty-ten has been a good year for publications:

  • Galster, J.A., & Galster, E.A., (2010). How to compare feedback suppression algorithms in open-canal fittings. Hearing Review, 17(11), 38-41. Click to read
  • Galster, J.A., (2010). A new method for wireless connectivity in hearing aids The Hearing Journal, 63 (10), 36-39. Click to read
  • VanVliet, D., & Galster, J.A. (2010). Invisible-In-Canal (IIC) hearing aids. Starkey Laboratories, Technology Paper. Click to read
  • Galster, J.A., & Schroeder, A. (2010). Changing the way patients interact with hearing aids. Canadian Hearing Report, 5(4), 44-46.
  • Woods, W., Nooraei, N., Galster, J.A., & Edwards, B. (2010). Real-world listening preference for an optimized digital noise reduction algorithm. Hearing Review, 17(9), 38-43. Click to read
  • McCabe, E., & Galster, J.A. (2010). Out of the barrel: Reducing occlusion in CICs with custom venting. Audiology Online. Click to read
  • Galster, J.A. & Pisa, J. (2010). Improving the patient experience in noise: Fast-acting single microphone noise reduction. Starkey Laboratories, Technology PaperClick to read
  • Pisa, J., Burk., M. & Galster., E.A. (2010). Evidence-based design of a noise-management algorithm. The Hearing Journal, 63(4), 42-48. Click to read
  • Galster, J.A., & Galster, E.A. (2010). Measuring the real ear aided response through a hearing aid. The Hearing Journal, 63(2), 32-35. Click to read

The iPad as a research interface

As part of an ongoing project we are using Apple’s iPad as a research interface. The commands are sent through a wireless connection. Response times are excellent and research participants have commented on the comfort of the iPad over traditional vertically mounted touch screens. They are able to sit naturally while the standard touchscreen or mouse requires that they sit forward in the chair.