Jens Hjortkjær

Senior Researcher

Research Interests

Auditory neuroscience
Cortical processing of natural sounds
Cortical bases of auditory attention
Speech processing
Psychoacoustics & auditory modelling

Contact Details

Jens Hjortkjær

Senior Researcher

+45 3862 2722

jensh@drcmr.dk

Affiliations

Technical University of Denmark

Employments

2016 – Present

Senior Researcher, DRCMR

2016 – Present

Senior Researcher, Hearing Systems group, Technical University of Denmark, DTU

2013 – 2016

Postdoc at CHeSS: Oticon Centre of Excellence for Speech and Hearing Sciences (DRCMR & Technical University of Denmark, DTU)

2012 – 2013

Research assistant, DRCMR

2011 – 1212

Research assistant, University of Copenhagen

2010 – 2010

Visiting researcher, IRCAM, Paris

2005 – 2006

Research Assistant, Unit for Cognitive Neuroscience, University of Copenhagen

Education

2011

PhD, Cognitive Psychology of Music, University of Copenhagen

2007

MA, Music & Cognitive Psychology, University of Copenhagen

2000

BA, Music & Philosophy, University of Aarhus

Publications

[31250f6c-30ea-4105-9d59-67b5f59fc8d9]

Hjortkjær J, Wong DDE, Catania A, Märcher-Rørsted J, Ceolini E, Fuglsang SA, Kiselev I, Di Liberto G, Liu S, Dau T, Slaney M & de Cheveigné A, Real-time control of a hearing instrument with EEG-based attention decoding

map[#text:Journal of Neural Engineering -lang:en] 

Journal of Neural Engineering  vol 22, Issue 1, 016027, (2025). DOI:10.1088/1741-2552/ad867c

Fuglsang SA, Madsen KH, Puonti O, Siebner HR & Hjortkjær J, Exploring an EM-algorithm for banded regression in computational neuroscience

map[#text:Imaging Neuroscience -lang:en] 

Imaging Neuroscience  vol 2, p. 1-19, (2024). DOI:10.1162/imag_a_00155

Pedersen NF, Dau T, Hansen LK & Hjortkjær J, Modulation transfer functions for audiovisual speech

[map[#text:PLOS Computational Biology -lang:en] map[#text:P L o S Computational Biology -lang:en]] 

  vol 18, Issue 7, p. 1-23, (2022). DOI:10.1371/journal.pcbi.1010273

Fuglsang SA, Madsen KH, Puonti O, Hjortkjær J & Siebner HR, Mapping cortico-subcortical sensitivity to 4 Hz amplitude modulation depth in human auditory system with functional MRI

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 246, p. 1-12, (2021). DOI:10.1016/j.neuroimage.2021.118745

Märcher-Rørsted J, Encina-Llamas G, Dau T, Liberman MC, Wu P & Hjortkjær J, Age-related reduction in frequency-following responses as a potential marker of cochlear neural degeneration

map[#text:Hearing Research -lang:en] 

Hearing Research  vol 414, p. 1-11, (2021). DOI:10.1016/j.heares.2021.108411

Scheuregger O, Hjortkjær J & Dau T, Identification and Discrimination of Sound Textures in Hearing-Impaired and Older Listeners

[map[#text:Trends in hearing -lang:en] map[#text:Trends Hear -lang:en] map[#text:Trends in Amplification -lang:en]] 

  vol 25, p. 1-14, (2021). DOI:10.1177/23312165211065608

Bachmann FL, MacDonald EN & Hjortkjær J, Neural Measures of Pitch Processing in EEG Responses to Running Speech

[map[#text:Frontiers in Neuroscience -lang:en] map[#text:Frontiers in Neuroscience -lang:en] map[#text:FRONT NEUROSCI-SWITZ -lang:en]] 

  vol 15, p. 1-11, (2021). DOI:10.3389/fnins.2021.738408

de Cheveigné A, Slaney M, Fuglsang S & Hjortkjaer J, Auditory stimulus-response modeling with a Match-Mismatch task

map[#text:Journal of Neural Engineering -lang:en] 

Journal of Neural Engineering  vol 18, Issue 4, p. 1-16, (2021). DOI:10.1088/1741-2552/abf771

Ceolini E, Hjortkjær J, Wong DDE, O'Sullivan J, Raghavan VS, Herrero J, Mehta AD, Liu S & Mesgarani N, Brain-informed speech separation (BISS) for enhancement of target speaker in multitalker speech perception

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 223, p. 1-12, (2020). DOI:10.1016/j.neuroimage.2020.117282

Fuglsang SA, Märcher-Rørsted J, Dau T & Hjortkjær J, Effects of sensorineural hearing loss on cortical synchronization to competing speech during selective attention

[map[#text:Neuroscience Journal -lang:en] map[#text:Journal of Neuroscience -lang:en] map[#text:The European journal of neuroscience -lang:en] map[#text:The Journal of Neuroscience : the official journal of the Society for Neuroscience -lang:en] map[#text:J Neurosci -lang:en]] 

  vol 40, Issue 12, p. 2562-2572, (2020). DOI:10.1523/JNEUROSCI.1936-19.2020

Hjortkjaer J, Märcher-Rørsted J, Fuglsang SA & Dau T, Cortical oscillations and entrainment in speech processing during working memory load

map[#text:European Journal of Neuroscience -lang:en] 

European Journal of Neuroscience  vol 51, Issue 5, p. 1279-1289, (2018). DOI:10.1111/ejn.13855

de Cheveigné A, Di Liberto GM, Arzounian D, Wong DDE, Hjortkjær J, Fuglsang S & Parra LC, Multiway canonical correlation analysis of brain data

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 186, p. 728-740, (2018). DOI:10.1016/j.neuroimage.2018.11.026

Wong DDE, Fuglsang SA, Hjortkjær J, Ceolini E, Slaney M & de Cheveigné A, A Comparison of Regularization Methods in Forward and Backward Models for Auditory Attention Decoding

[map[#text:Frontiers in Neuroscience -lang:en] map[#text:Frontiers in Neuroscience -lang:en] map[#text:FRONT NEUROSCI-SWITZ -lang:en]] 

  vol 12, Issue 531, (2018). DOI:10.3389/fnins.2018.00531

de Cheveigné A, Wong D, Di Liberto GM, Hjortkjaer J, Slaney M & Lalor E, Decoding the auditory brain with canonical component analysis

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 172, p. 206-216, (2018). DOI:10.1016/j.neuroimage.2018.01.033

Hjortkjær J, Kassuba T, Madsen KH, Skov M & Siebner HR, Task-Modulated Cortical Representations of Natural Sound Source Categories

[map[#text:Cerebral Cortex -lang:en] map[#text:Cerebral Cortex -lang:en]] 

  vol 28, Issue 1, p. 295-306, (2018). DOI:10.1093/cercor/bhx263

Bianchi F, Hjortkjær J, Santurette S, Zatorre RJ, Siebner HR & Dau T, Subcortical and cortical correlates of pitch discrimination: Evidence for two levels of neuroplasticity in musicians,

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 163, p. 398-412, (2017). DOI:10.1016/j.neuroimage.2017.07.057

Fuglsang SA, Dau T & Hjortkjær J, Noise-robust cortical tracking of attended speech in real-world acoustic scenes

map[#text:NeuroImage -lang:en] 

NeuroImage  vol 156, p. 435-444, (2017). DOI:10.1016/j.neuroimage.2017.04.026

Hjortkjær J & McAdams S, Spectral and temporal cues for perception of material and action categories in impacted sound sources

[map[#text:Journal of the Acoustical Society of America -lang:en] map[#text:Acoustical Society of America. Journal -lang:en]] 

  vol 140, Issue 1, p. 409-420, (2016). DOI:10.1121/1.4955181

Wendt D, Dau T & Hjortkjær J, Impact of Background Noise and Sentence Complexity on Processing Demands during Sentence Comprehension

[map[#text:Frontiers in Psychology -lang:en] map[#text:Frontiers in Psychology -lang:en]] 

  vol 7, Issue MAR, 345, (2016). DOI:10.3389/fpsyg.2016.00345

Hjortkjær J & Walther-Hansen M, Perceptual effects of dynamic range compression in popular music recordings.

[map[#text:Journal of the Audio Engineering Society -lang:en] map[#text:Journal of the Audio Engineering Society -lang:en]] 

  vol 62, Issue 1, p. 37-41, (2014). DOI:


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