Friday, 15 June 2018

Seminar Dr. Jorg Buchholz and Drs. Javier Badajoz Davila - 2 July 2018

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KU Leuven
Invitation Research Seminar
ExpORL, Dept. Neurosciences

More realistic assessment of hearing ability and device benefit in the laboratory

Dr. Jorg Buchholz

Macquarie University & National Acoustic Laboratories, Australia

Cochlear implant performance in virtual sound environments

Drs. Javier Badajoz Davila

Macquarie University & National Acoustic Laboratories, Australia

Research Seminar

When?

Monday, 2 July 2018, 13:00

Where?

Seminar room GS1
O&N 1, 4th floor - KU Leuven
Herestraat 49
B-3000 Leuven

Please reply to this email if you are planning to attend the presentation.

Wednesday, 9 May 2018

Seminar Ahmad Khatoun - 16 May 2018

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KU Leuven
Invitation Research Seminar
ExpORL, Dept. Neurosciences

tACS – transcranial or transcutaneous alternating current stimulation?

Ahmad Khatoun

Research Seminar

When?

Wednesday, 16 May 2018, 15:30-16:30

Where?

Seminar room HP2
O&N 2 - KU Leuven
Herestraat 49
B-3000 Leuven

Abstract

Transcranial alternating current stimulation or tACS is a neuromodulation method in which electrodes are placed on the scalp and used to deliver sinewave electrical stimulation. The electric field passes through the scalp, skull and CSF before a weak current reaches the brain. It is assumed that the weak alternating current in the cortex directly modulates the membrane potential causing neural entrainment. tACS has been shown to modulate speech, motor, cognitive and memory function. However, these findings are highly controversial, as recent studies have shown that the current reaching the cortex in humans is not be strong enough to directly entrain neural activity. We propose a new hypothesis that can reconcile these two sets of opposing results: the ‘t’ in tACS represents transcutaneous stimulation of peripheral nerves in the skin and not transcranial stimulation of cortical neurons. The induced rhythmic activity in peripheral nerves then entrains cortical neurons through an indirect route. To test this hypothesis we first recorded from neurons in the rat motor cortex using an experimental design that isolates the putative transcranial and transcutaneous mechanisms. Our results established that transcutaneous stimulation does entrain cortical neurons and that this is similar to entrainment caused by transcranial stimulation. Then, in healthy volunteers, we used physiological tremor as an outcome measure to test which mechanisms is dominant. In one experiment, we blocked the transcutaneous mechanism by applying topical scalp anesthesia and found that tACS effects were significantly decreased. In another experiment, we isolated the transcutaneous mechanism by placing tACS electrodes on the contralateral arm and still found tremor entrainment. We conclude that tACS effects on the motor system are mostly caused by transcutaneous, and not transcranial, stimulation. The role of a transcutaneous mechanism in mediating tACS effects on other systems should be considered.

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Wednesday, 2 May 2018

Seminar Dr. Tobias Neher - 28 May 2018

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KU Leuven
Invitation Research Seminar
ExpORL, Dept. Neurosciences

Recent developments in hearing aid rehabilitation.

Dr. Tobias Neher

Institute of Clinical Research, University of Southern Denmark, Odense, Denmark

When?

Monday, 28 May 2018, 11:00 am

Where?

Seminar room HP 1
O&N II, 4th floor - KU Leuven
Herestraat 49
B-3000 Leuven

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Wednesday, 25 April 2018

Seminar Dr. Bas van Dijk and Dr. Arjan Bosman - 27 April 2018

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KU Leuven
Invitation Research Seminar
ExpORL, Dept. Neurosciences
 

Research Seminar:
Cochlear implant fitting;
Bone anchored hearing aids.

Dr. Bas van Dijk
Dr. Arjan Bosman

Research Seminar

When?

Friday, 27 april 2018, 14:00

Where?

Seminar room Vesalius ALO 06.100
ALO, 6th floor - KU Leuven
Herestraat 49
B-3000 Leuven

Programme

14u: Cochlear implant fitting

        Dr. Bas van Dijk, Cochlear technology Centre Europe

16u: BAHA: Bone anchored hearing aids: technology and audiology

        Dr. Arjan Bosman, Radboud University Nijmegen Medical Centre

 

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Wednesday, 4 April 2018

Congratulations to our new doctoral graduates!

Congratulations to our new doctoral graduates!


In the past few months, five members of our lab successfully defended their PhD projects!

A short overview:

On December 18, Charlotte Vercammen presented her thesis: "Interdisciplinary aspects of hearing: contributions of changes in temporal resolution and memory capacity early in life. "


January 17, Astrid De Vos' PhD defense took place. Her thesis is titled: "Neurophysiological markers for auditory temporal processing deficits in dyslexia".




Tine Goossens presented her thesis, "Speech perception and neural temporal processing across the adult lifespan - Unraveling effect of age and hearing impairment", on February 21.



On March 2,  Hanne Deprez completed her PhD with the thesis: "Cochlear implant artifact suppression in EEG measurements". (Picture by Filip Deprez)



Finally, on March 21, Maaike Van Eeckhoutte had her PhD defense with the thesis “Neural correlates of loudness: loudness adaptation, loudness growth, and loudness balancing”.



We would like to congratulate Charlotte, Astrid, Tine, Hanne and Maaike one final time. The lab is incredibly proud of these five talented researchers and wishes them all the best in their future careers.






Monday, 19 March 2018

Seminar Giovanni Di Liberto - 27 April 2018

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KU Leuven
Invitation Research Seminar
ExpORL, Dept. Neurosciences

Isolating neural indices of phoneme-level speech processing from multivariate neural data.

Giovanni Di Liberto

Research Seminar

When?

Friday, 27 april 2018, 13:00-14:00

Where?

Seminar room GS1
O&N 1 - KU Leuven
Herestraat 49
B-3000 Leuven

Please reply to this email if you are planning to attend the presentation.

Wednesday, 28 February 2018

In the news: Brain waves reflect speech understanding

We recently developed a method to measure whether someone can understand speech from decoding their brain waves, recorded using EEG. It was published in the Journal of the Association for Research in Otolaryngology. We are happy to announce that it has now also been picked up by the main stream media:


The scientific article can be retrieved here.

The work behind the article was done mainly by PhD student Jonas Vanthornhout, under guidance of Prof. Tom Francart, with contributions from Lien Decruy, Jan Wouters and Jonathan Simon (University of Maryland).
This research was funded mainly by an ERC starting grant to Prof. Francart, a KU Leuven research project and an FWO-SB mandate to Jonas Vanthornhout.