web analytics

Category: Papers

Categories
Adaptive Control Attention EEG / MEG Neural dynamics Papers Uncategorized

New paper in eLife, Waschke et al.

For­mer Oble­ser­lab PhD stu­dent Leo Waschke is now out in eLife with an inge­nious demon­stra­tion how both endoge­nous and exoge­nous­ly-dri­ven changes in the steep­ness of the brain-elec­tric 1/f pow­er spec­trum (in part linked direct­ly to local excitation:inhibiton, E:I, ratio) in neur­al pop­u­la­tions can affect behav­iour in com­plex, mul­ti-sen­so­ry envi­ron­ments: “Modal­i­ty-spe­cif­ic track­ing of atten­tion and sen­so­ry sta­tis­tics in the human elec­tro­phys­i­o­log­i­cal spec­tral expo­nent”. 

The results draw heav­i­ly on the recent spec­tral-slope expo­nent work by our col­lab­o­ra­tors at Uni­ver­si­ty of Cal­i­for­nia San Diego in the lab of Bradley Voytek, and have come togeth­er in a three-lab col­labo of Lübeck, San Diego, and Leo’s cur­rent sci­en­tif­ic home, the Dou­glas Gar­rett lab at the MPIB.

 
Con­grat­u­la­tions, Leo!

https://twitter.com/bradleyvoytek/status/1451591258384650244?s=20

Categories
Acoustics Neural Filters Neural Phase Papers Perception Publications Uncategorized

New paper in Devel­op­men­tal Cog­ni­tive Neu­ro­science, Jessen et al.

Our lab (senior author Sarah Tune) teamed up once again with the Baby­lab Lübeck, led by Sarah Jessen: Sarah and Sarah co-wrote a great tuto­r­i­al on how the ver­sa­tile analy­sis frame­work of tem­po­ral response func­tions can be used to analyse brain data obtained in infants. The arti­cle has now been accept­ed for pub­li­ca­tion in the well-reput­ed jour­nal Devel­op­men­tal Cog­ni­tive Neu­ro­science:

 

Categories
Auditory Neuroscience Auditory Speech Processing fMRI Linguistics Papers Perception Psychology Semantics Speech Uncategorized

New paper in Sci­ence Advances by Schmitt et al.

Very excit­ed to announce that for­mer Obleser lab PhD stu­dent Lea-Maria Schmitt with her co-authors *) is now out in the Jour­nal Sci­ence Advances with her new work, fus­ing artif­i­cal neur­al net­works and func­tion­al MRI data, on timescales of pre­dic­tion in nat­ur­al lan­guage comprehension:

“Pre­dict­ing speech from a cor­ti­cal hier­ar­chy of event-based time scales”

*) Lea-Maria Schmitt, Julia Erb, Sarah Tune, and Jonas Obleser from the Obleser lab / Lübeck side, and our col­lab­o­ra­tors Anna Rysop and Gesa Hartwigsen from Gesa’s Lise Meit­ner group at the Max Planck Insti­tute in Leipzig. This research was made pos­si­ble by the ERC and the DFG.

 

Categories
Adaptive Control Editorial Notes Neural Oscillations Papers

New Paper accept­ed in Plos Biol­o­gy, Alavash et al.

 

Our lab is proud and hap­py that anoth­er major step­ping stone from our ERC con­sol­ida­tor project (“AUDADAPT”) is now accept­ed for pub­li­ca­tion in PLoS Biol­o­gy! Con­grat­u­la­tions to our first author Dr Mohsen Alavash, now a senior researcher in the Obleser lab in his own right.

 

 

Categories
Acoustics Familiarity Papers Perception Publications Voice

New Paper in Cog­ni­tion by Lavan, Kre­it­e­wolf et al.

Con­grat­u­la­tions to for­mer Obleser post­doc Jens Kre­it­e­wolf (now at McGill Uni­ver­si­ty) for his new paper in Cog­ni­tion, “Famil­iar­i­ty and task con­text shape the use of acoustic infor­ma­tion in voice iden­ti­ty perception”! 

Togeth­er with our col­leagues from Lon­don, Nadine Lavan and Car­olyn McGet­ti­gan, we took a new approach to test the long­stand­ing the­o­ret­i­cal claim that lis­ten­ers dif­fer in their use of acoustic infor­ma­tion when per­ceiv­ing iden­ti­ty from famil­iar and unfa­mil­iar voic­es. Unlike pre­vi­ous stud­ies that have relat­ed sin­gle acoustic fea­tures to voice iden­ti­ty per­cep­tion, we linked lis­ten­ers’ voice-iden­ti­ty judg­ments to more com­plex acoustic representations—that is, the spec­tral sim­i­lar­i­ty of voice  record­ings (see Fig­ure below).

This new study has a direct link to pop cul­ture (by cap­ti­laz­ing on nat­u­ral­ly-vary­ing voice record­ings tak­en from the famous TV show Break­ing Bad) and chal­lenges tra­di­tion­al pro­pos­als that view famil­iar and unfa­mil­iar voice per­cep­tion as being dis­tinct at all times.

Click here to find out more.

Categories
Attention Auditory Neuroscience EEG / MEG Papers Publications Speech Tracking Unilateral Vocoding

New Paper in Trends in Hear­ing by Kraus et al.

Frauke Kraus, Sarah Tune, Anna Ruhe, Jonas Obleser & Malte Wöst­mann demon­strate that uni­lat­er­al acoustic degra­da­tion delays atten­tion­al sep­a­ra­tion of com­pet­ing speech.

Uni­lat­er­al cochlear implant (CI) users have to inte­grate acousti­cal­ly intact speech on one ear and acousti­cal­ly degrad­ed speech on the oth­er ear. How inter­act uni­lat­er­al acoustic degra­da­tion and spa­tial atten­tion in a mul­titalk­er situation?
N = 22 par­tic­i­pants took part in a com­pet­ing lis­ten­ing exper­i­ment while lis­ten­ing to an intact audio­book under dis­trac­tion of an acousti­cal­ly degrad­ed audio­book and vice ver­sa. Speech track­ing revealed not per se reduced atten­tion­al sep­a­ra­tion of acousti­cal­ly degrad­ed speech but instead a delay in time com­pared to intact speech. These find­ings might explain lis­ten­ing chal­lenges expe­ri­enced by uni­lat­er­al CI users.

To learn more, the paper is avail­able here.

Categories
Editorial Notes Neural Oscillations Neural Phase Papers Uncategorized

A qui­et inno­va­tor: Peter Lakatos (1972–2021)

Our dear col­league and col­lab­o­ra­tor Peter Lakatos passed away sud­den­ly two months ago. With Peter’s so untime­ly death at the age of 49, Neu­ro­science has suf­fered an unimag­in­able loss.
It has been an hon­our and priv­i­lege to con­tribute Peter Lakatos’ obit­u­ary to Nature Neu­ro­science.

— Jonas Obleser

The pic­ture shows Peter just after or dur­ing his talk at our SNAP 2013 work­shop at the Max Planck Insti­tute in Leipzig. Inci­dent­ly, this is also the talk I ref­er­enced in my recent obit­u­ary, linked above.

Categories
Ageing Auditory Cortex Auditory Neuroscience EEG / MEG Hearing Loss Neural Filters Papers Publications

New paper in Nature Com­mu­ni­ca­tions by Tune et al.

We are very excit­ed to share that Oble­ser­lab post­doc Sarah Tune has a new paper in Nature Com­mu­ni­ca­tions. „Neur­al atten­tion­al-fil­ter mech­a­nisms of lis­ten­ing suc­cess in mid­dle-aged and old­er par­tic­i­pants“ is our lat­est and to-date most exten­sive out­put of the lon­gi­tu­di­nal ERC Con­sol­ida­tor project on adap­tive lis­ten­ing in age­ing indi­vid­ual (AUDADAPT).

This co-pro­duc­tion with cur­rent (Mohsen Alavash and Jonas Obleser) and for­mer (Lorenz Fiedler) Oble­ser­lab mem­bers, takes an in-depth and inte­gra­tive look at how two of the most exten­sive­ly stud­ied neu­ro­bi­o­log­i­cal atten­tion­al-fil­ter imple­men­ta­tions, alpha pow­er lat­er­al­iza­tion and selec­tive neur­al speech track­ing, relate to one anoth­er and to lis­ten­ing sucess.

Lever­ag­ing our large, rep­re­sen­ta­tive sam­ple of aging lis­ten­ers (N=155, 39–80 years), we show that both neur­al fil­ter imple­men­tatins are robust­ly mod­u­lat­ed by atten­tion but oper­ate sur­prins­ing­ly inde­pen­dent of one another.

In a series of sophis­ti­cat­ed sin­gle-tri­al lin­ear mod­els that include vari­a­tion in neur­al fil­ter strength with­in and between indi­vid­u­als, we demon­strate how the pref­er­en­tial neur­al track­ing of attend­ed ver­sus ignored speech but not alpha lat­er­al­iza­tion boosts lis­ten­ing success.

To learn more, the paper is avail­able here.