Joan LiuPhD (2015) Postdoctoral Researcher
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University of Louvain (UCL) Tel : +32 10 47 92 60
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Research Interests
I am interested in the visual system's efficiency in processing faces. More specifically, I want to understand how individual faces are discriminated despite the similiarity of their features and how an internal representation of identity is built, enabling us to accurately recognise a face regardless of varying viewing contexts (i.e. viewpoint, age, degraded visual input...).
The goal of my PhD is to clarify these questions using steady-state visual evoked potentials (SSVEP), an electrophysiological technique based on EEG that allows to measure neurophysiological processes with high precision. Given the robustness of this method, I also plan to study face processing abilities across the lifespan.
Publications
Liu-Shuang, J., Ales, J.M., Rossion, B., Norcia, A.M. (2015). Separable effects of inversion and contrast reversal on face detection thresholds and reponse functions: a sweep VEP study. Journal of Vision, 10;15(2). pii: 11. doi: 10.1167/15.2.11. [PDF]
Liu-Shuang, J., Ales, J.M., Rossion, B., Norcia, A.M. (2015). The effect of contrast polarity reversal on face detection: evidence of perceptual asymmetry from sweep VEP. Vision Research, 108, 8-19. [PDF]
Rossion, B., Torfs, K., Jacques, C., Liu-Shuang, J. (2015). Fast periodic presentation of natural face images reveals a robust face-selective electrophysiological response in the human brain. Journal of Vision, 15, 1, 18. [PDF] Natural Face Stimuli used in the study
Liu-Shuang, J., Norcia, A.M., Rossion, B. (2014). An objective index of individual face discrimination in the right occipito-temporal cortex by means of fast periodic visual stimulation. Neuropsychologia, 52, 57-72. [PDF]
Prieto, E.A, Van Belle, G., Liu-Shuang, J., Norcia, A.M., Rossion, B. (2013). The 6Hz fundamental frequency rate for individual face discirmination in the right occipito-temporal cortex. Neuropsychologia, 51, 2863-2975. [PDF]