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.
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]).
Rüdiger Labahn | idw - Informationsdienst Wissenschaft
Blood biopsy: New technique enables detailed genetic analysis of cancer cells
16.05.2019 | University of Michigan
Detecting dementia's damaging effects before it's too late
14.05.2019 | University of Arizona
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells
The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
22.05.2019 | Life Sciences
22.05.2019 | Life Sciences
22.05.2019 | Physics and Astronomy