Projects per year
Personal profile
Biography
I obtained my PhD in Biomedical sciences in 2013 at the University of Leuven (KU Leuven) in Belgium. My research project focused on investigating the polarity sensitivity of the auditory nerve by means of objective measures of peripheral and central neuronal activity in humans with cochlear implants. After successfully defending and approving my PhD defence, I moved to the UK and worked as a postdoctoral researcher at University College London (UCL) in the project entitled “Advancing Binaural Cochlear Implant Technology (ABCIT)”, a project supported by the European Commission under the Health Theme of 7th Framework Programme for Research and Technological Development. Here, I had the opportunity to investigate and develop new objective measurements (EEG recordings) of binaural processing in normal listeners as well as in cochlear implant users. The results of this project led me to obtain the “New Investigator Award” at the 8th International Symposium on Objective Measures in Auditory Implants held in Toronto, Canada. I started my second and current postdoctoral position at Macquarie University in 2015 where my research projects focuses on the following aspects:
- Basic mechanisms of electrical hearing This project focuses on understanding how sounds are encoded by the human brain and how these mechanisms may affect speech understanding. In order to do so, I have developed novel paradigms to be able to assess neural activity generated by different electrical pulse shapes. This innovative methods and results have helped to understand how the human auditory nerve responds to electrical stimulation – which differs from animal models. This research is being carried out in collaboration with our colleagues at University of Leuven.
- Binaural hearing In this project I’m investigating new methods to register neural activity to sounds with binaural information. As a result, I developed novel EEG biomarker for binaural processing in the human brain. Here, I demonstrated for the first time a robust brain signature of binaural processing which corresponded well with behavioural performance in a binaural task (correlation index was 0.96 / 1.0). Now, we are using this method for understanding the basic neural mechanisms of binaural hearing and how binaural processing relates to hearing speech in noise background.
- Hearing loss In this project I’m investigating an ongoing and growing research topic referred as “hidden hearing loss”. This term applies to individuals with clinically “normal hearing” but with strong problems in understanding speech in noise. In this project, I am in charge of developing measures of brain activity that may be indicative of hearing problems at conversational levels in the presence of noise. This is an ongoing project where colleagues at UCL
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Collaborations and top research areas from the last five years
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On the relation between speech understanding and neural processing
Hernandez-Perez, H. (Chief Investigator), McAlpine, D. (Chief Investigator), Undurraga Lucero, J. (Chief Investigator) & Van Yper, L. (Primary Chief Investigator)
17/05/21 → 20/05/26
Project: Research
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How the brain creates a sense of auditory space
McAlpine, D. (Primary Chief Investigator), Undurraga Lucero, J. (Primary Chief Investigator), PhD Contribution (ARC), P. C. (Student), PhD Contribution 2 (ARC), P. C. 2. (Student), MQRES, M. (Student) & MQRES 2, M. 2. (Student)
1/10/16 → 28/06/30
Project: Research
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MQRIS Small: Audiological equipment to unlock hearing research
Van Yper, L. (Primary Chief Investigator), McAlpine, D. (Chief Investigator), Buchholz, J. (Chief Investigator) & Undurraga Lucero, J. (Chief Investigator)
1/01/20 → 31/01/20
Project: Research
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Listen and Learn—Statistical Learning and the Adapting Auditory Brain
Hernandez-Perez, H. (Fellow), McAlpine, D. (Primary Chief Investigator), Monaghan, J. (Associate Investigator), Undurraga Lucero, J. (Primary Chief Investigator), Shulver, K. (Student), M. Fuentes, J. A. (Student) & Sowman, P. (Associate Investigator)
13/07/18 → 19/05/25
Project: Research
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Listen and Learn - Statistical Learning and the Adapting Auditory Brain
McAlpine, D. (Primary Chief Investigator), Badcock, N. (Chief Investigator), Sowman, P. (Chief Investigator), Chait, M. (Partner Investigator), Todd, J. (Chief Investigator), Monaghan, J. (Chief Investigator), Undurraga Lucero, J. (Chief Investigator) & Harper, N. S. (Partner Investigator)
28/05/18 → 27/05/21
Project: Other
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The neural representation of an auditory spatial cue in the primate cortex
Undurraga, J. A., Luke, R., Van Yper, L., Monaghan, J. J. M. & McAlpine, D., 20 May 2024, In: Current biology : CB. 34, 10, p. 2162-2174, e1–e5 19 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile40 Downloads (Pure) -
Human cortical processing of interaural coherence
Luke, R., Innes-Brown, H., Undurraga, J. A. & McAlpine, D., 20 May 2022, In: iScience. 25, 5, p. 1-17 17 p., 104181.Research output: Contribution to journal › Article › peer-review
Open AccessFile3 Citations (Scopus)53 Downloads (Pure) -
Simultaneous subcortical and cortical electrophysiological recordings of spectro-temporal processing in humans
Calcus, A., Undurraga, J. A. & Vickers, D., 3 Aug 2022, In: Frontiers in Neurology. 13, p. 1-11 11 p., 928158.Research output: Contribution to journal › Article › peer-review
Open AccessFile3 Citations (Scopus)51 Downloads (Pure) -
Spike-rate adaptation in a computational model of human-shaped spiral ganglion neurons
Recugnat, M., Undurraga, J. A. & Mcalpine, D., 1 Feb 2022, In: IEEE Transactions on Biomedical Engineering. 69, 2, p. 602-612 11 p.Research output: Contribution to journal › Article › peer-review
2 Citations (Scopus) -
Characterizing cochlear implant artefact removal from EEG recordings using a real human model
Undurraga, J. A., Van Yper, L., Bance, M., McAlpine, D. & Vickers, D., 25 Apr 2021, In: MethodsX. 8, p. 1-16 16 p., 101369.Research output: Contribution to journal › Article › peer-review
Open AccessFile7 Citations (Scopus)70 Downloads (Pure)
Datasets
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The neural representation of an auditory spatial cue in primate cortex
Undurraga Lucero, J. (Owner), Luke, R. (Contributor), Van Yper, L. (Contributor), Monaghan, J. (Contributor) & McAlpine, D. (Contributor), Macquarie University, 5 May 2024
DOI: 10.25949/25585946.v2
Dataset