Research Interests
Auditory neuroscience
Cortical processing of natural sounds
Cortical bases of auditory attention
Speech processing
Psychoacoustics & auditory modelling
Contact Details
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
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 (2025), 'Real-time control of a hearing instrument with EEG-based attention decoding', Journal of Neural Engineering, 22(1)
Fuglsang SA, Madsen KH, Puonti O, Siebner HR, Hjortkjær J (2024), 'Exploring an EM-algorithm for banded regression in computational neuroscience', Imaging Neuroscience, 2:1-19
Pedersen NF, Dau T, Hansen LK, Hjortkjær J (2022), 'Modulation transfer functions for audiovisual speech', PLOS Computational Biology, 18(7):1-23
Fuglsang SA, Madsen KH, Puonti O, Hjortkjær J, Siebner HR (2021), 'Mapping cortico-subcortical sensitivity to 4 Hz amplitude modulation depth in human auditory system with functional MRI', NeuroImage, 246:1-12
Märcher-Rørsted J, Encina-Llamas G, Dau T, Liberman MC, Wu P, Hjortkjær J (2021), 'Age-related reduction in frequency-following responses as a potential marker of cochlear neural degeneration', Hearing Research, 414:1-11
Scheuregger O, Hjortkjær J, Dau T (2021), 'Identification and Discrimination of Sound Textures in Hearing-Impaired and Older Listeners', Trends in hearing, 25:1-14
Bachmann FL, MacDonald EN, Hjortkjær J (2021), 'Neural Measures of Pitch Processing in EEG Responses to Running Speech', Frontiers in Neuroscience, 15:1-11
de Cheveigné A, Slaney M, Fuglsang S, Hjortkjaer J (2021), 'Auditory stimulus-response modeling with a Match-Mismatch task', Journal of Neural Engineering, 18(4):1-16
Ceolini E, Hjortkjær J, Wong DDE, O'Sullivan J, Raghavan VS, Herrero J, Mehta AD, Liu S, Mesgarani N (2020), 'Brain-informed speech separation (BISS) for enhancement of target speaker in multitalker speech perception', NeuroImage, 223:1-12
Fuglsang SA, Märcher-Rørsted J, Dau T, Hjortkjær J (2020), 'Effects of sensorineural hearing loss on cortical synchronization to competing speech during selective attention', Neuroscience Journal, 40(12):2562-2572
Hjortkjaer J, Märcher-Rørsted J, Fuglsang SA, Dau T (2018), 'Cortical oscillations and entrainment in speech processing during working memory load', European Journal of Neuroscience, 51(5):1279-1289
de Cheveigné A, Di Liberto GM, Arzounian D, Wong DDE, Hjortkjær J, Fuglsang S, Parra LC (2018), 'Multiway canonical correlation analysis of brain data', NeuroImage, 186:728-740
Wong DDE, Fuglsang SA, Hjortkjær J, Ceolini E, Slaney M, de Cheveigné A (2018), 'A Comparison of Regularization Methods in Forward and Backward Models for Auditory Attention Decoding', Frontiers in Neuroscience, 12(531)
de Cheveigné A, Wong D, Di Liberto GM, Hjortkjaer J, Slaney M, Lalor E (2018), 'Decoding the auditory brain with canonical component analysis', NeuroImage, 172:206-216
Hjortkjær J, Kassuba T, Madsen KH, Skov M, Siebner HR (2018), 'Task-Modulated Cortical Representations of Natural Sound Source Categories', Cerebral Cortex, 28(1):295-306
Bianchi F, Hjortkjær J, Santurette S, Zatorre RJ, Siebner HR, Dau T (2017), 'Subcortical and cortical correlates of pitch discrimination', NeuroImage, 163:398-412
Hjortkjær J, Bianchi F (2017), unknown publication 1ef6f2de-9bc0-4a99-9038-d27d7c773f49
Hjortkjær J, Märcher-Rørsted J (2017), unknown publication e8fc8330-e5bc-415e-9974-33bdeee4c502
Carstensen M, Fuglsang SA, Dau T, Hjortkjær J (2017), unknown publication 75fb9100-358c-4e66-937f-12ca49a7513d
Hjortkjær J, Märcher-Rørsted J (2017), unknown publication 18635e05-ed67-4134-accc-49e379cfc803
Fuglsang SA, Dau T, Hjortkjær J (2017), 'Noise-robust cortical tracking of attended speech in real-world acoustic scenes', NeuroImage, 156:435-444
Wong D, Hjortkjær J, Fuglsang SA, De Cheveigne A (2017), unknown publication 19b179f6-ba39-4912-b7df-6ca86c76da1e
Fuglsang SA, Hjortkjær J, Dau T (2017), unknown publication 947dcf11-580f-4f40-86e5-2467ba0c7512
MacWalter RI, Hjortkjær J, Siebner HR, Dau T, Madsen KH (2016), unknown publication f6328dcb-6983-49be-9a7c-c58efeb14634
Hjortkjær J, McAdams S (2016), 'Spectral and temporal cues for perception of material and action categories in impacted sound sources', Journal of the Acoustical Society of America, 140(1):409-420
Wendt D, Dau T, Hjortkjær J (2016), 'Impact of Background Noise and Sentence Complexity on Processing Demands during Sentence Comprehension', Frontiers in Psychology, 7(MAR)
McWalter RI, Hjortkjær J, Siebner HR, Dau T, Madsen KH (2016), unknown publication 38756af9-10be-42f5-be2f-3466bf95e9c3
Bianchi F, Hjortkjær J, Santurette S, Siebner HR, Dau T (2016), unknown publication 5ced6ddb-7292-437e-b2df-c6e802ac2b9d
Hjortkjær J, Dau T (2016), unknown publication 414d6fdb-4f52-4bd7-89ae-56a5628331e8
Hjortkjær J (2016), 'Sound objects – Auditory objects – Musical objects', Danish Musicology Online, Special Edition:47-56
Wendt D, Dau T, Hjortkjær J (2015), 'Impact of background noise and sentence complexity on cognitive processing effort', Proceedings of ISAAR 2015: : Individual Hearing Loss – Characterization, Modelling, :373-380
Hjortkjær J, Walther-Hansen M (2014), 'Perceptual effects of dynamic range compression in popular music recordings.', Journal of the Audio Engineering Society, 62(1):37-41
Hjortkjær J (2014), unknown publication 9120a0d2-988d-481f-9643-6ce3780efba4
Bianchi F, Hjortkjær J, Santurette S, Dau T, Siebner HR (2013), unknown publication aeedf9aa-31bf-44ab-b3f6-2919b11538b4
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