Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Speech comprehension with a cochlear implant

04.06.2018

Some cochlear implant recipients learn to understand speech exceedingly well while others struggle with speech comprehension difficulties. A novel hearing test shortly after implantation can accurately predict future speech recognition.

Currently the only neuroprostheses that can successfully replace a sensory organ are cochlear implants: They can restore hearing in deaf patients. Cochlear implants pick up sound and translate it into an electric signal which is transmitted directly to the auditory nerve, thus by-passing the damaged middle or inner ear.


Speech comprehension with a cochlear implant

IPSY / Universität zu Lübeck

The transduced sound signal is considerably distorted, however, sounding like a “harsh whisper”, as some patients would describe it. Cochlear implant recipients vary largely in how well they adapt to their device: Some learn to comprehend speech even under difficult listening condi¬tions, such as on the phone or in a pub, while others hardly benefit from their device. The source of this variability is still elusive.

Previous studies have shown that clinical factors such as duration of deafness clearly influence speech recognition with a cochlear implant. A recent study demonstrates that non-speech temporal auditory abilities also contribute considerably to speech outcome (doi: 10.1097/AUD.0000000000000588).

Researchers at the Max Planck Institute for Human Cognitive and Brain Sciences, the Cochlear Implant Center Leipzig, and the University of Lübeck tested newly implanted adults on their capacity to hear temporal modulations in noise. This novel hearing test turned out to be highly correlated with future speech recognition: Patients, who could better hear temporal modulations were also the ones, who had a better speech comprehension six months later. In contrast, the ones with poor auditory temporal resolution had an increased risk of poor future speech comprehension.

For the growing number of cochlear implant patients (to date approximately 150 000 in Europe), this adaptation process is a vital necessity. After a period of deafness, adjusting to the extremely degraded, unfamiliar signal delivered by the implant enables the listener to extract meaning from a messy auditory signal. Novel, reliable hearing tests are essential with respect to two points: On the one hand, they allow to identify poor performers early on and to consequently prescribe appropriate training measures. On the other hand, they can help to improve CI algorithms on an individual basis.

Erb J, Ludwig AA, Kunke D, Fuchs M, & Obleser J. Temporal sensitivity measured shortly after cochlear implantation predicts six-month speech recognition outcome (Ear Hear. 2018 Apr 24. doi: 10.1097/AUD.0000000000000588. [Epub ahead of print]).

Weitere Informationen:

https://www.ncbi.nlm.nih.gov/pubmed/29697465

Rüdiger Labahn | idw - Informationsdienst Wissenschaft
Further information:
http://www.uni-luebeck.de

More articles from Medical Engineering:

nachricht New insight into the brain’s hidden depths: Jena scientists develop minimally-invasive endoscope
27.11.2018 | Leibniz-Institut für Photonische Technologien e. V.

nachricht New China and US studies back use of pulse oximeters for assessing blood pressure
21.11.2018 | University of British Columbia

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Magic number colloidal clusters

13.12.2018 | Life Sciences

UNLV study unlocks clues to how planets form

13.12.2018 | Physics and Astronomy

Live from the ocean research vessel Atlantis

13.12.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>