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Category: Speech

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Auditory Cortex Auditory Neuroscience Auditory Perception EEG / MEG Evoked Activity Papers Perception Publications

New paper in press: Her­rmann, Schlicht­ing, & Obleser, Jour­nal of Neuroscience

Björn Her­rmann has yet anoth­er paper in press in the Jour­nal of Neuroscience!

Dynam­ic Range Adap­ta­tion to Spec­tral Stim­u­lus Sta­tis­tics in Human Audi­to­ry Cortex

The paper is now avail­able online free of charge, and—funnily enough—appeared right on Jan­u­ary 1, 2014.

Screen Shot 2014-01-02 at 14.38.58

Ref­er­ences

  • Her­rmann B, Schlicht­ing N, Obleser J. Dynam­ic range adap­ta­tion to spec­tral stim­u­lus sta­tis­tics in human audi­to­ry cor­tex. J Neu­rosci. 2014 Jan 1;34(1):327–31. PMID: 24381293. [Open with Read]
Categories
Ageing Auditory Neuroscience Auditory Speech Processing Clinical relevance Degraded Acoustics Executive Functions fMRI Hearing Loss Noise-Vocoded Speech Papers Publications Speech

New paper in press: Erb & Obleser, Fron­tiers in Sys­tems Neuroscience

Julia Erb just got accept­ed the third study of her PhD project,

Upreg­u­la­tion of cog­ni­tive con­trol net­works in old­er adults’ speech comprehension

It will appear in Fron­tiers in Sys­tems Neu­ro­science soon.

The data are an exten­sion (in old­er adults) of Julia’s Jour­nal of Neu­ro­science paper ear­li­er this year.

Ref­er­ences

  • Erb J, Obleser J. Upreg­u­la­tion of cog­ni­tive con­trol net­works in old­er adults’ speech com­pre­hen­sion. Front Syst Neu­rosci. 2013 Dec 24;7:116. PMID: 24399939. [Open with Read]
Categories
Auditory Cortex Auditory Neuroscience Auditory Perception Auditory Speech Processing EEG / MEG Neural Oscillations Neural Phase Papers Publications

New paper in press: Hen­ry & Obleser, PLOS ONE [Update]

Watch this space and the PLOS ONE web­site for a forth­com­ing arti­cle by Mol­ly Hen­ry and me;

Dis­so­cia­ble neur­al response sig­na­tures for slow ampli­tude and fre­quen­cy mod­u­la­tion in human audi­to­ry cortex

Hark­ing back at what we had argued ini­tial­ly in our 2012 Fron­tiers op’ed piece (togeth­er with Björn Her­rmann), Mol­ly presents neat evi­dence for dis­so­cia­ble cor­ti­cal sig­na­tures of slow ampli­tude ver­sus fre­quen­cy mod­u­la­tion. These cor­ti­cal sig­na­tures poten­tial­ly pro­vide an effi­cient means to dis­sect simul­ta­ne­ous­ly com­mu­ni­cat­ed slow tem­po­ral and spec­tral infor­ma­tion in acoustic com­mu­ni­ca­tion signals.

[Update]

Paper is avail­able here.

Ref­er­ences

  • Hen­ry MJ, Obleser J. Dis­so­cia­ble neur­al response sig­na­tures for slow ampli­tude and fre­quen­cy mod­u­la­tion in human audi­to­ry cor­tex. PLoS One. 2013 Oct 29;8(10):e78758. PMID: 24205309. [Open with Read]
Categories
Auditory Perception EEG / MEG Media Neural Oscillations Neural Phase Perception Publications

3sat fea­tures neur­al oscil­la­tions on TV

Ger­man pub­lic tele­vi­sion broad­cast­er 3sat fea­tured our research on neur­al oscil­la­tions (see our PNAS Paper) in its series nano .

Unfor­tu­nate­ly it’s only in Ger­man. How­ev­er, have fun watch­ing it:

[Update] If the embed­ded video is not work­ing for you, watch it on the 3sat web­site (Flash).

Ref­er­ences

  • Hen­ry MJ, Obleser J. Fre­quen­cy mod­u­la­tion entrains slow neur­al oscil­la­tions and opti­mizes human lis­ten­ing behav­ior. Proc Natl Acad Sci U S A. 2012 Dec 4;109(49):20095–100. PMID: 23151506. [Open with Read]
Categories
Auditory Neuroscience Auditory Perception Degraded Acoustics Executive Functions Papers Publications

Lis­ten­ing: The strat­e­gy mat­ters [Update]

In press on Neuropsychologia

Thal­a­m­ic and pari­etal brain mor­phol­o­gy pre­dicts audi­to­ry cat­e­go­ry learning

figure_mat

Cat­e­go­riz­ing sounds is vital for adap­tive human behav­ior. Accord­ing­ly, chang­ing lis­ten­ing sit­u­a­tions (exter­nal noise, but also periph­er­al hear­ing loss in aging) require lis­ten­ers to flex­i­bly adjust their cat­e­go­riza­tion strate­gies, e.g., switch amongst avail­able acoustic cues. How­ev­er, lis­ten­ers dif­fer con­sid­er­ably in these adap­tive capa­bil­i­ties. For this rea­son, we employed vox­el-based mor­phom­e­try (VBM) in our study (Neu­ropsy­cholo­gia, In press), in order to assess the degree to which indi­vid­ual brain mor­phol­o­gy is pre­dic­tive of such adap­tive lis­ten­ing behavior.

Con­tin­ue read­ing “Lis­ten­ing: The strat­e­gy mat­ters [Update]”

Ref­er­ences

  • Scharinger M1, Hen­ry MJ2, Erb J2, Mey­er L3, Obleser J2. Thal­a­m­ic and pari­etal brain mor­phol­o­gy pre­dicts audi­to­ry cat­e­go­ry learn­ing. Neu­ropsy­cholo­gia. 2014 Jan;53:75–83. PMID: 24035788. [Open with Read]
Categories
Auditory Cortex Auditory Neuroscience Auditory Perception EEG / MEG Neural Oscillations Neural Phase Papers Perception Publications

New paper in press: Her­rmann, Hen­ry, Grigutsch & Obleser, The Jour­nal of Neu­ro­science [Update]

Oscil­la­to­ry Phase Dynam­ics in Neur­al Entrain­ment Under­pin Illu­so­ry Per­cepts of Time

Nat­ur­al sounds like speech and music inher­ent­ly vary in tem­po over time. Yet, con­tex­tu­al fac­tors such as vari­a­tions in the sound’s loud­ness or pitch influ­ence per­cep­tion of tem­po­ral rate change towards slow­ing down or speed­ing up.

A new MEG study by Björn Her­rmann, Mol­ly Hen­ry, Maren Grigutsch and Jonas Obleser asked for the neur­al oscil­la­to­ry dynam­ics that under­pin con­text-induced illu­sions in tem­po­ral rate change and found illu­so­ry per­cepts to be linked to changes in the neur­al phase pat­terns of entrained oscil­la­tions while the exact fre­quen­cy of the oscil­la­to­ry response was relat­ed to veridi­cal percepts.

The paper is in press and forth­com­ing in The Jour­nal of Neuroscience.

 

Update:

Paper is avail­able online.

Ref­er­ences

  • Her­rmann B, Hen­ry MJ, Grigutsch M, Obleser J. Oscil­la­to­ry phase dynam­ics in neur­al entrain­ment under­pin illu­so­ry per­cepts of time. J Neu­rosci. 2013 Oct 2;33(40):15799–809. PMID: 24089487. [Open with Read]
Categories
Auditory Neuroscience Auditory Perception Auditory Working Memory Executive Functions fMRI Papers Perception Publications

New paper has been pub­lished in Cere­bral Cor­tex by Hen­ry, Her­rmann, & Obleser

When we lis­ten to sounds like speech and music, we have to make sense of dif­fer­ent acoustic fea­tures that vary simul­ta­ne­ous­ly along mul­ti­ple time scales. This means that we, as lis­ten­ers, have to selec­tive­ly attend to, but at the same time selec­tive­ly ignore, sep­a­rate but inter­twined fea­tures of a stimulus.

Brain regions associated with selective attending to and selective ignoring of temporal stimulus features.
Brain regions asso­ci­at­ed with selec­tive attend­ing to and selec­tive ignor­ing of tem­po­ral stim­u­lus fea­tures. (more)

A new­ly pub­lished fMRI study by Mol­ly Hen­ry, Björn Her­rmann, and Jonas Obleser found a net­work of brain regions that respond­ed oppo­site­ly to iden­ti­cal stim­u­lus char­ac­ter­is­tics depend­ing on whether they were rel­e­vant or irrel­e­vant, even when both stim­u­lus fea­tures involved atten­tion to time and tem­po­ral features.

You can check out the arti­cle here:

http://cercor.oxfordjournals.org/content/early/2013/08/23/cercor.bht240.full

Ref­er­ences

  • Hen­ry MJ, Her­rmann B, Obleser J. Selec­tive Atten­tion to Tem­po­ral Fea­tures on Nest­ed Time Scales. Cereb Cor­tex. 2013 Aug 26. PMID: 23978652. [Open with Read]
Categories
Auditory Cortex Auditory Neuroscience Auditory Perception Clinical relevance EEG / MEG Evoked Activity Hearing Loss Papers Psychology Publications

New paper in press: Her­rmann et al., Hear­ing Research [Update]

Audi­to­ry fil­ter width affects response mag­ni­tude but not fre­quen­cy speci­fici­ty in audi­to­ry cortex

This is fan­tas­tic news on a fri­day morn­ing: Obleser lab Post­doc Björn Her­rmann teamed up with his fel­low Post­docs Math­ias Scharinger and Mol­ly Hen­ry to study how spec­tral analy­sis in the audi­to­ry periph­ery (termed fre­quen­cy selec­tiv­i­ty) relates to pro­cess­ing in audi­to­ry cor­tex (termed fre­quen­cy speci­fici­ty; see also Björns paper in J Neu­ro­phys­i­ol 2013).

Giv­ing this an age­ing and hear­ing loss per­spec­tive and build­ing on the con­cept of audi­to­ry fil­ters in the cochlea (Moore et al.), Björn found that  the over­all N1 ampli­tude of lis­ten­ers, but not their fre­quen­cy-spe­cif­ic neur­al adap­ta­tion pat­terns, is cor­re­lat­ed with the pass-band of the audi­to­ry filter.

This sug­gests that widened audi­to­ry fil­ters are com­pen­sat­ed for by a response gain in fre­quen­cy-spe­cif­ic areas of audi­to­ry cor­tex; the paper is in press and forth­com­ing in Hear­ing Research.

 

Update:

Paper is avail­able online.

Ref­er­ences

  • Her­rmann B, Hen­ry MJ, Scharinger M, Obleser J. Audi­to­ry fil­ter width affects response mag­ni­tude but not fre­quen­cy speci­fici­ty in audi­to­ry cor­tex. Hear Res. 2013 Oct;304:128–36. PMID: 23876524. [Open with Read]