Arnaud Leleu

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Associate Professor – Université Bourgogne Europe

Head of the DOCC Lab

PhD in Psychology and Neuroscience

My research activity deals with the neurocognitive mechanisms of (multi)sensory perception – i.e., the mechanisms elicited to rapidly and readily interpret sensory inputs – with a particular interest in the senses of smell and sight and the interactions between these two systems. The aim is to understand, through the study of typical human adults or those suffering from perceptual disorders, and the study of very young developing humans (first year of life), how the brain gives meaning to environmental signals and produces an integrated subjective experience. This topic is divided into 3 main axes: (1) Functioning and dysfunction of visual perception, with a special focus on face perception; (2) Role of olfaction in perceptual development, with a special focus on the information conveyed by body odors; (3) Multisensory integration when unisensory perception is demanding (still developing, disturbed or constrained by scarce or ambiguous sensory inputs).

I mainly use an experimental approach combining behavioral and neural (electroencephalography) measures. I also participate in the development of psychometric tools.

Kiseleva, A., Rekow, D., Schaal, B., & Leleu, A. (2024). Olfactory facilitation of visual categorization in the 4-month-old brain depends on visual demand. Developmental Science, 27 (6), e13562. 10.1111/desc.13562; hal-04737214

Cecchetto, C., Leleu, A., Calce, R. P., Arnhardt, S., Parma, V., de Groot, J. H. B., Freiherr, J., Gentili, C., Zou, L., Thunell, E., Fischmeister, F. P., Rekow, D., & Dal Bò, E. (2024). Consistent social odor representation across 7 languages: The Social Odor Scale translation and validation. Chemical Senses, 49, bjae035. 10.1093/chemse/bjae035; hal-04736847

Rekow, D., Baudouin, J.-Y., Kiseleva, A., Rossion, B., Durand, K., Schaal, B., & Leleu, A. (2024). Olfactory-to-visual facilitation in the infant brain declines gradually from 4 to 12 months. Child Development, 95 (6), 1967–1981. 10.1111/cdev.14124; hal-04667543

Calce, R. P., Rekow, D., Barbero, F. M., Kiseleva, A., Talwar, S., Leleu, A., & Collignon, O. (2024). Voice categorization in the four-month-old human brain. Current Biology, 34, 46–55.e4. 10.1016/j.cub.2023.11.042; hal-04445123

Rekow, D., Baudouin, J.-Y., Durand, K., & Leleu, A. (2022). Smell what you hardly see: Odors assist visual categorization in the human brain. NeuroImage, 255, 119181. 10.1016/j.neuroimage.2022.119181; hal-03744651

Rekow, D., Baudouin, J.-Y., Brochard, R., Rossion, B., & Leleu, A. (2022). Rapid neural categorization of facelike objects predicts the perceptual awareness of a face (face pareidolia). Cognition, 222, 105016. 10.1016/j.cognition.2022.105016; hal-03542375

Rekow, D., Baudouin, J.-Y., Poncet, F., Damon, F., Durand, K., Schaal, B., Rossion, B., & Leleu, A. (2021). Odor-driven face-like categorization in the human infant brain. Proc. Natl. Acad. Sci. USA, 118 (21), e2014979118. 10.1073/pnas.2014979118; hal-03230756

Poncet, F., Leleu, A., Rekow, D., Damon, F., Durand, K., Schaal, B., & Baudouin, J.-Y. (2021). Odor-evoked hedonic contexts influence the categorization of facial expressions in the human brain. Biological Psychology, 158, 108005. 10.1016/j.biopsycho.2020.108005; hal-03077913

Rekow, D., Leleu, A., Poncet, F., Damon, F., Rossion, B., Durand, K., Schaal, B., & Baudouin, J.-Y. (2020). Categorization of objects and faces in the infant brain and its sensitivity to maternal odor: Further evidence for the role of intersensory congruency in perceptual development. Cognitive Development, 55, 100930. 10.1016/j.cogdev.2020.100930; hal-02969609

Leleu, A., Rekow, D., Poncet, F., Schaal, B., Durand, K., Rossion, B., & Baudouin, J.-Y. (2020). Maternal odor shapes rapid face categorization in the infant brain. Developmental Science, 23 (2), e12877. 10.1111/desc.12877; hal-02147749

Leleu, A., Favre, E., Yailian, A., Fumat, H., Klamm, J., Amado, I., Baudouin, J.-Y., Franck, N., & Demily, C. (2019). An implicit and reliable neural measure quantifying impaired visual coding of facial expression: Evidence from the 22q11.2 deletion syndrome. Translational Psychiatry, 9, 67. 10.1038/s41398-019-0411-z; hal-02618950

Leleu, A., Dzhelyova, M., Rossion, B., Brochard, R., Durand, K., Schaal, B. & Baudouin, J.-Y. (2018). Tuning functions for automatic detection of brief changes of facial expression in the human brain. NeuroImage, 179, 235–251. 10.1016/j.neuroimage.2018.06.048; hal-01889449