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Christian Lorenzi

Laboratoire des Systèmes Perceptifs

Faculty
Poste
Full Professor in Experimental Psychology at Ecole normale superieure

29 rue d'Ulm

75005 Paris France

 

Laboratory
LSP
Team
Audition
Office
Laboratoire des Systèmes Perceptifs, ENS, 29 rue d'Ulm, 75005 Paris (2d floor)
Tel
+33 (0)1 44 32 26 74
Selected publications
International Journal article  

Lorenzi, C., Apoux, F., Grinfeder, E., Krause, B. , Miller-Viacava, N. & Sueur, J. (2023). Human Auditory Ecology: Extending Hearing Research to the Perception of Natural Soundscapes by Humans in Rapidly Changing Environments. Trends in hearing, . doi:10.1177/23312165231212032

International Journal article  

Miller-Viacava, N., Lazard, D., Delmas, T., Krause, B. , Apoux, F. & Lorenzi, C. (2023). Sensorineural hearing loss alters auditory discrimination of natural soundscapes. International journal of audiology, . doi:10.1080/14992027.2023.2272559

International Journal article  

Apoux, F., Miller-Viacava, N., Ferriere, R., Dai, H., Krause, B. , Sueur, J. & Lorenzi, C. (2023). Auditory discrimination of natural soundscapes. The Journal of the Acoustical Society of America, 153(5), 2706. doi:10.1121/10.0017972

International Journal article  

Grinfeder, E., Lorenzi, C., Haupert, S. & Sueur, J. (2022). What Do We Mean by “Soundscape”? A Functional Description. Front. Ecol. Evol, 10, 894232. doi:10.3389/fevo.2022.894232

International Journal article  

Varnet, L. & Lorenzi, C. (2022). Probing temporal modulation detection in white noise using intrinsic envelope fluctuations: A reverse-correlation study. Journal of the Acoustical Society of America, 151(2), 1353-1366. doi:10.1121/10.0009629

International Journal article  

Cabrera, L., Lorenzini, I. , Rosen , S., Varnet, L. & Lorenzi, C. (2022). Temporal integration for amplitude modulation in childhood : Interaction between internal noise and memory. Hearing Research, 415(1), 108403. doi:10.1016/j.heares.2021.108403

International Journal article  

Attia, S., King, A., Varnet, L., Ponsot, E. & Lorenzi, C. (2021). Double-pass consistency for amplitude and frequency modulation detection in normal hearing listeners. J Acoust Soc Am, 150(5), 3631. doi:10.1121/10.0006811

International Journal article  

Varnet, L., Agnès C., L., Boucher, S. , Bonnet, C. , Petit, C. & Lorenzi, C. (2021). Contributions of Age-Related and Audibility-Related Deficits to Aided Consonant Identification in Presbycusis: A Causal-Inference Analysis. Front. Aging Neurosci., 13, 83. doi:10.3389/fnagi.2021.640522

International Journal article  

Thoret, E., Varnet, L., Boubenec, Y., Ferriere, R., Le Tourneau , F., Krause, B. & Lorenzi, C. (2020). Characterizing amplitude and frequency modulation cues in natural soundscapes: A pilot study in four habitats of a biosphere reserve. Journal of the Acoustical Society of America, 147, 3260-3274. doi:10.1121/10.0001174

International Journal article  

Cabrera, L., Varnet, L., Buss , E., Rosen, S. & Lorenzi, C. (2019). Development of temporal auditory processing in childhood: Changes in efficiency rather than temporal-modulation selectivity. The Journal of the Acoustical Society of America, 146(4), 2415-2429. doi:10.1121/1.5128324

International Journal article  

King, A., Varnet, L. & Lorenzi, C. (2019). Accounting for masking of frequency modulation by amplitude modulation with the modulation filter-bank concept. The Journal of the Acoustical Society of America, 145, 2277. doi:10.1121/1.5094344

International Journal article  

Buss , E., Lorenzi, C., Cabrera, L., Leibold , L. & Grose, J. (2019). Amplitude modulation detection and modulation masking in school-age children and adults. The Journal of the Acoustical Society of America, 145, 2565. doi:10.1121/1.5098950

International Journal article  

Wallaert, N., Varnet, L., Moore, B. & Lorenzi, C. (2018). Sensorineural hearing loss impairs sensitivity but spares temporal integration for detection of frequency modulation. J Acoust Soc Am. , 144(2), 720. doi:10.1121/1.5049364

International Journal article  

Ewert, S., Paraouty, N. & Lorenzi, C. (2018). A two-path model of auditory modulation detection using temporal fine structure and envelope cues. European Journal of Neuroscience. doi:10.1111/ejn.13846

International Journal article  

Paraouty, N., Stasiak, A., Lorenzi, C., Varnet, L. & Winter, I. (2018). Dual coding of frequency modulation in the ventral cochlear nucleus. Journal of Neuroscience , 17. doi:10.1523/JNEUROSCI.2107-17.2018

International Journal article  

Goodman, D., Winter, I., Léger, A., de Cheveigné, A. & Lorenzi, C. (2018). Modelling firing regularity in the ventral cochlear nucleus: Mechanisms, and effects of stimulus level and synaptopathy. Hearing research, 358, 98-100. doi:10.1016/j.heares.2017.09.010

International Journal article  

Varnet, L., Ortiz-Barajas, M., Erra, R., Gervain, J. & Lorenzi, C. (2017). A cross-linguistic study of speech modulation spectra. The Journal of the Acoustical Society of America, 142(4), 1976. doi:10.1121/1.5006179

International Journal article  

Wallaert, N., Moore, B., Ewert, S. & Lorenzi, C. (2017). Sensorineural hearing loss enhances auditory sensitivity and temporal integration for amplitude modulation. The Journal of the Acoustical Society of America, 141(2), 971. doi:10.1121/1.4976080

International Journal article  

Paraouty, N. & Lorenzi, C. (2017). Using individual differences to assess modulation-processing mechanisms and age effects. Hearing research, 344, 38-49. doi:10.1016/j.heares.2016.10.024

International Journal article  

Paraouty, N., Ewert, S., Wallaert, N. & Lorenzi, C. (2016). Interactions between amplitude modulation and frequency modulation processing: Effects of age and hearing loss. The Journal of the Acoustical Society of America, 140(1), 121. doi:10.1121/1.4955078

International Journal article  

Wallaert, N., Moore, B. & Lorenzi, C. (2016). Comparing the effects of age on amplitude modulation and frequency modulation detection. The Journal of the Acoustical Society of America, 139(6), 3088. doi:10.1121/1.4953019

Short Biography

I was trained in Psychology at Univ Lyon II. I then obtained a Master degree in Cognitive Sciences and a Ph.D. in Experimental Psychology in the same university. I have worked at the Applied Psychology Unit of the Medical Research Council (MRC, Cambridge, UK) as a post-doctoral scientist, and at the Institute of Hearing Research of the MRC (Glasgow, UK) as a junior scientist. I was recruited at the Univ Paris Descartes as lecturer (1997) and then full professor (2001), before taking a position of full professor in Experimental Psychology at the Ecole normale superieure (Paris) in 2011. I am a fellow of the Acoustical Society of America and a former (junior) member of IUF (2001). My research focuses on temporal processing by the normal and impaired human auditory system, the perception of speech and natural soundscapes by normal-hearing and hearing-impaired people.
 

Curriculum vitae

Research Interest

My research program focuses on the processing of the temporal structure of sounds by the normal and impaired auditory system in humans. I study the auditory perception of two types of temporal modulations of the acoustic signal, the temporal envelope and temporal fine structure, using various approaches (psychophysics, clinical audiology, computer modeling, developmental psychology, neuropsychology, brain imaging, electrophysiology).

For some years now, our research in human auditory ecology has focused on the auditory perception of natural scenes - i.e. natural soundscapes (forests, savannahs, deserts) - by normal-hearing and hearing-impaired people, as well as our ability to perceive the presence of living beings and biodiversity of these environments.

 

Teaching

My teaching focuses on human auditory perception and the scientific methods used to study it. At Bachelor level, I teach and coordinate a general introduction to the psychology of perception. At Master's level, I teach psychophysical methods and experimental audiology (the study of hearing difficulties and their rehabilitation using hearing aids and implants). I also teach and coordinate a more general course on sensory ecology, with a particular focus on human auditory ecology. At PhD level, I coordinate several courses on ethics and preparations for applications in the academic and public sectors.  

Human auditory ecology

Human auditory ecology – the scientific study of the interactions between humans and the environment through the auditory modality – is not limited to the case of urban settings and communication, but extends to natural settings and perception of more “natural” (e.g., wild or rural) soundscapes and their components. Here we use massive acoustic databases of high quality and novel experimental paradigms to set up ecologically-valid investigations of human perception that challenge our current knowledge of basic auditory mechanisms and auditory scene analysis and unveil “monitoring capacities” distinct from those engaged in communication. Their universality, specificity and the possibility to enhance them through life-long exposure and training are open to question. Computational modelling guides this endeavour. The extension of this research program to audiology should also refine our understanding of the perceptual consequences of cochlear and central damage, and offer new perspectives to improve the quality of life and more broadly health of people living in rural settings and people visiting regularly green or blue spaces within cities or national parks. This research may also suggest ways to be better prepared to address shocks and transition to sustainable urban and rural environments.  

More info:

Administration
  • Director of Scientific Studies at Ecole normale superieure, Paris (2014 - 2020)
  • Head of the Departement d’Etudes Cognitives, Ecole normale supérieure, Paris (2009-2013)
  • Head of the ‘Institut d’Etude de la Cognition (LabEx IEC, ranked A+, 2011, Investissements d’avenir program)” of Ecole normale supérieure (2011-2013: Budget: € 8.5 M))
  • Leader of the “Audition” team of the UMR 8158 (2004-2007; 3 PIs, 1 Technician,~ 10 PhD students/postdocs)
  • Founder (2005) and director (2005-2009) of the national consortium for research in audiology, GDR-GRAEC (CNRS GDR 2967, ~27 partners)
  • Member of Section 16 “Psychologie” of the Conseil National des Universités, CNU” (2007-2011)
  • Member of the “Commission nationale d’attribution des Primes d’Encadrement Doctoral (PEDR) et des Primes d’Excellence Scientifique PES” (2008, 2009)
  • Member of the “Comité Opérationnel d’Ethique (COPE ; CNRS Ethics committee) » du CNRS” (2006)