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Lorenz Fiedler

Lorenz Fiedler

Senior Scientist

“I hope that existing inequalities and biases in science will be further reduced in the future. This includes more open access to knowledge and a fair representation of everyone in the data we base our interpretation of the world on.”

What is your primary work area within Eriksholm Research Centre?

I am working as a scientist in the field of listening effort and auditory attention. My work includes the design, execution, analysis, and publication of experimental studies as well as supervision of students. In my recent work, I am focusing on the question of how momentary distraction by environmental sounds can be measured and how we can find a good compromise between amplification of relevant sounds and attenuation of irrelevant sounds in hearing devices.

What is your primary work area within Eriksholm Research Centre?

I am working as a scientist in the field of listening effort and auditory attention. My work includes the design, execution, analysis, and publication of experimental studies as well as supervision of students. In my recent work, I am focusing on the question of how momentary distraction by environmental sounds can be measured and how we can find a good compromise between amplification of relevant sounds and attenuation of irrelevant sounds in hearing devices.

What originally triggered your interest in the hearing care field?

During my training as electrical engineer I became interested in electroacoustics, digital signal processing and human hearing. After I finished studying, I felt the need to do something purposeful. Applied hearing research seemed to be a good match.

What originally triggered your interest in the hearing care field?

During my training as electrical engineer I became interested in electroacoustics, digital signal processing and human hearing. After I finished studying, I felt the need to do something purposeful. Applied hearing research seemed to be a good match.

What brought you to Eriksholm?

I wrote my PhD-thesis in a collaborative project between University of Lübeck and Eriksholm, so I knew Eriksholm well before I applied for an open position after finishing my PhD.

What brought you to Eriksholm?

I wrote my PhD-thesis in a collaborative project between University of Lübeck and Eriksholm, so I knew Eriksholm well before I applied for an open position after finishing my PhD.

What motivates you in your job?

Working at Eriksholm gives me the chance to provide evidence-based answers to questions that potentially become important during the development of future hearing aids. The future is unknown, but we still try to look ahead a couple of years to come up with research questions that address current issues of hearing aid users with future technology. Being allowed to analytically approach a wholesome purpose with some degree of creativity is what makes me like my job.

What motivates you in your job?

Working at Eriksholm gives me the chance to provide evidence-based answers to questions that potentially become important during the development of future hearing aids. The future is unknown, but we still try to look ahead a couple of years to come up with research questions that address current issues of hearing aid users with future technology. Being allowed to analytically approach a wholesome purpose with some degree of creativity is what makes me like my job.

What do you hope to achieve in the long run?

Research is taking very small steps and the direct impact of our work sometimes needs a closer look to be identified. In the long run, I hope that my work provides a benefit for the individual person who would otherwise struggle in everyday communication.

What do you hope to achieve in the long run?

Research is taking very small steps and the direct impact of our work sometimes needs a closer look to be identified. In the long run, I hope that my work provides a benefit for the individual person who would otherwise struggle in everyday communication.

What do you do in your spare time when you’re not working at Eriksholm?

I love self-supported endurance cycling and playing the drums.

What do you do in your spare time when you’re not working at Eriksholm?

I love self-supported endurance cycling and playing the drums.

What is the most exciting scientific breakthrough or invention in your time?

Obviously, the recent advances in AI-based language models are fascinating in many ways and it shows that AI keeps opening possibilities for new applications, also in the hearing aid industry. However, as in other applications, AI may be great to predict and mimic certain behavior, but it may not be sufficient to understand the mechanisms behind it. Hence, well-founded hypothesis and experimental work should never become obsolete.

What is the most exciting scientific breakthrough or invention in your time?

Obviously, the recent advances in AI-based language models are fascinating in many ways and it shows that AI keeps opening possibilities for new applications, also in the hearing aid industry. However, as in other applications, AI may be great to predict and mimic certain behavior, but it may not be sufficient to understand the mechanisms behind it. Hence, well-founded hypothesis and experimental work should never become obsolete.

What do you hope will happen in future science?

I hope that existing inequalities and biases in science will be further reduced in the future. This includes more open access to knowledge and a fair representation of everyone in the data we base our interpretation of the world on.

I also hope that trust in science will always be maintained, which requires researchers to communicate their work to a broad audience and that large political decisions are well-founded on the evidence-based recommendations of experts.

What do you hope will happen in future science?

I hope that existing inequalities and biases in science will be further reduced in the future. This includes more open access to knowledge and a fair representation of everyone in the data we base our interpretation of the world on.

I also hope that trust in science will always be maintained, which requires researchers to communicate their work to a broad audience and that large political decisions are well-founded on the evidence-based recommendations of experts.

Publications

To see related publications, please follow this link and type in the scientist’s name in the free text search field. The result shows publications by this scientist during collaboration with Eriksholm Research Centre and/or with relevance to current work.

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Andersen, A. H., Santurette, S., Pedersen, M. S., Alickovic, E., Fiedler, L., Jensen, J., Behrens, T. (2021). Creating clarity in noisy environments by using deep learning in hearing aids. Seminars in Hearing , 2021.
Książek, P., Zekveld, A. A., Fiedler, L., Kramer, S.E., Wendt, D. (2021). Components of pupil dilation responses reveal the interplay between signal-to-noise ratio and recall during and auditory working memory task.
Kramer, S. E., Bhuiyan, T., Bramsløw, L., Fiedler, L., Graversen, C., Hadley, L. V., Innes-Brown, H., Naylor, G., Richter, M., Saunders, G. H., Versfeld, N. J., Wendt, D., Whitmer, W. M.,  Zekveld, A. A. (2017). Innovative Hearing Aid Research on Ecological Conditions and Outcome Measures: The HEAR-ECO Project.
Menase, D. A., Richter, M. M., Wendt, D., Fiedler, L., & Naylor, G. (2022). Task-Induced mental fatigue and motivation influence listening effort as measured by the pupil dilation in a Speech-in-Noise task. medRxiv (Cold Spring Harbor Laboratory). https://doi.org/10.1101/2022.01.04.22268734
Fiedler, L., Lunner, T., Brandmeyer, A., Wöstmann, M., Graversen, C., Obleser, J. (2015). In-Ear-EEG indicates neural signatures of effortful auditory processing [Poster]. the Entrainment of Brain Oscillations in Delmenhorst, Germany, 17-18 September.
Graversen, C., Petersen, E.B., Favre-Felix, A., Fiedler, L., Obleser, J., Lunner, T. (2016). Ear-EEG as a novel technology for wearable brain wave monitoring [Poster]. the Society for Neuroscience 46th Annual Meeting, San Diego, CA, USA, November 12-16, 2016.
Fiedler, L., Wöstmann, M., Graversen, C., Brandmeyer, A., Lunner, T. (2017). Single-channel in-Ear-EEG detects the focus of auditory attention to concurrent tone streams and mixed speech. Journal of Neural Engineering, 14 (3).
Lunner, T., Graversen, C., Seifi, Ala, T., Fiedler, L., Hietkamp, R., Wendt, D., Alickovic, E. (2019). Effect of Noise-Reduction Scheme on Auditory Attention Detection [Poster]. CHSCOM 2019, June 9-12, Sweden.
Jørgensen, M., Larsen, D., Wendt, D., Fiedler, L., Micula, A., Ng, E. (2019). How do Noise Reduction and Task Difficulty Affect Effort Mobilization of Hearing-Aid Users in a Recall task? [Poster]. CHScom 2019.
Aličković, E., Lunner, T., Wendt, D., Fiedler, L., Hietkamp, R. K., Ng, E. H. N., & Graversen, C. (2020). Neural representation enhanced for speech and reduced for background noise with a hearing aid noise reduction scheme during a selective attention task. Frontiers in Neuroscience, 14. https://doi.org/10.3389/fnins.2020.00846
Micula, A., Rönnberg, J., Fiedler, L., Wendt, D., Jørgensen, C. M., Larsen, K. D., Ning, Ng, H. E. (2021). Effect of Speech-to-Noise Ratio and Luminance on a Range of Current and Potential Pupil Response Measures to Assess Listening Effort. Ear and Hearing. 2021.
Książek, P., Zekveld, A. A., Wendt, D., Fiedler, L., Lunner, T., & Kramer, S. E. (2021). Effect of Speech-to-Noise ratio and luminance on a range of current and potential pupil response measures to assess listening effort. Trends in Hearing, 25, 233121652110093. https://doi.org/10.1177/23312165211009351
Fiedler, L., Seifi, T., Graversen, C., Aličković, E., Lunner, T., & Wendt, D. (2021). Hearing aid noise reduction lowers the sustained listening effort during continuous speech in Noise—A combined pupillometry and EEG study. Ear And Hearing, 42(6), 1590–1601. https://doi.org/10.1097/aud.0000000000001050
Bönitz, H., Lunner, T., Finke, M., Fiedler, L., Lyxell, B., Riis, S., Ng, E. H. N., Valdes, A. L., Büchner, A., & Wendt, D. (2021). How do we allocate our resources when listening and memorizing speech in noise? A pupillometry study. Ear And Hearing, 42(4), 846–859. https://doi.org/10.1097/aud.0000000000001002
Aličković, E., Ning Ng, E. H., Fiedler, L., Santurette, S., Innes‐Brown, H., & Graversen, C. (2021). Effects of hearing aid noise reduction on early and late cortical representations of competing talkers in noise. Frontiers in Neuroscience, 15. https://doi.org/10.3389/fnins.2021.636060
Micula, A., Rönnberg, J., Książek, P., Murmu, R. P., Wendt, D., Fiedler, L., & Ng, E. H. N. (2022). A glimpse of memory through the eyes: pupillary responses measured during encoding reflect the likelihood of subsequent memory recall in an auditory free recall test. Trends in Hearing, 26, 233121652211305. https://doi.org/10.1177/23312165221130581
Fiedler, L. (2022).Physiological measures of saliency-dependent disruption of sustained auditory attention [Conference presentation]. CHSCOM.

Projects

Neural measures of Selective Auditory Attention for Assessment of Hearing Aid Technology 
CURRENT
Neural measures of Selective Auditory Attention for Assessment of Hearing Aid Technology 
4335,3008

Cognitive Hearing Science, Artificial Intelligence (AI)

Selective auditory attention is crucial for effective speech communication and social interaction in...
Selective auditory attention is crucial for effective speech communication and social interaction in complex sound…
HearEco: Innovative Hearing Aid Research – Ecological Conditions and Outcome Measures 
FINALIZED
Hear-Eco: Innovative Hearing Aid Research – Ecological Conditions and Outcome Measures 
3008,1037

Cognitive Hearing Science

In today’s aging European population, hearing impairment is an increasing concern for public healt...
In today’s aging European population, hearing impairment is an increasing concern for public health and…
Neurophysiological measures of attention capture 
CURRENT
Neurophysiological measures of attention capture  
4373,3008

Cognitive Hearing Science

Our brain is constantly scanning the environment for potentially relevant information outside our cu...
Our brain is constantly scanning the environment for potentially relevant information outside our current focus…
Mapping the curve of communication breakdowns during conversations in noise
Current
Mapping the curve of communication breakdowns during conversations in noise
4415,6493,18220,18222

Personalised Audiology

This project aims to determine the curve of communication breakdowns for hearing aid wearers and the...
This project aims to determine the curve of communication breakdowns for hearing aid wearers and…
Forming and Following Auditory Objects
Current
Forming and Following Auditory Objects
18176,1037,18178

Cognitive Hearing Science

This project investigates how the brain represents these auditory objects and how this process is af...
This project investigates how the brain represents these auditory objects and how this process is…
EASY LISTENING: Optimizing the consequences of effortful listening in occupational settings
CURRENT
EASY LISTENING: Optimizing the Consequences of Effortful Listening in Occupational Settings
3008,1037

Cognitive Hearing Science, Personalised Audiology

The project aims to train a new generation of entrepreneurial scientists skilled in using interdisci...
The project aims to train a new generation of entrepreneurial scientists skilled in using interdisciplinary…
Neural measures of Selective Auditory Attention for Assessment of Hearing Aid Technology 
CURRENT
Neural measures of Selective Auditory Attention for Assessment of Hearing Aid Technology 
4335,3008

Cognitive Hearing Science, Artificial Intelligence (AI)

Selective auditory attention is crucial for effective speech communication and social interaction in...
Selective auditory attention is crucial for effective speech communication and social interaction in complex sound…
HearEco: Innovative Hearing Aid Research – Ecological Conditions and Outcome Measures 
FINALIZED
Hear-Eco: Innovative Hearing Aid Research – Ecological Conditions and Outcome Measures 
3008,1037

Cognitive Hearing Science

In today’s aging European population, hearing impairment is an increasing concern for public healt...
In today’s aging European population, hearing impairment is an increasing concern for public health and…
Neurophysiological measures of attention capture 
CURRENT
Neurophysiological measures of attention capture  
4373,3008

Cognitive Hearing Science

Our brain is constantly scanning the environment for potentially relevant information outside our cu...
Our brain is constantly scanning the environment for potentially relevant information outside our current focus…

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