Alexandre Delaux (PhD student Sorbonne University)

Vision Institute
Aging in Vision and Action Lab
CNRS – INSERM – Sorbonne University
17, rue Moreau F-75012 Paris, France
Phone: +33 (0)1 53 46 26 54

email:

 

Research interests: 
I conduct my doctoral work in the framework of the Silversight project Healthy Visual Aging, Action and Autonomy (ANR Research Chair) at the Vision Institute. My main interest lies in monitoring brain activity in ecological-like conditions in order to provide insights on the impact of healthy aging on spatial cognition in realistic situations. I aim to design a functional platform for mobile brain imaging with additional biometric sensors (eye tracking, motion capture, …). Applications will focus on visually based spatial navigation tasks, which offer a representative case of high-level brain function (prominently mediated by active vision).
Healthy aging is associated with natural degradation of low-level visual functions as well as higher-level spatial cognitive functions. For instance, older people have difficulty to properly use visual information to perform complex navigation tasks. Throughout my PhD, I will formulate and test hypotheses to understand how visual and cognitive aging impair the ability to navigate properly. During my experiments, I am using electroencephalography (EEG) in both virtual reality and real-world setups, to study human behavior during exploration, navigation and spatial reorientation.

Short bio: 
I hold an engineering degree (major in Electrical Engineering) from Ecole polytechnique (X). This general background with strong mathematics and physics training helps me tackle various scientific issues. I also hold a master’s degree in Bioengineering from Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland. During my bioengineering studies, I focused on neuroscience courses, from modeling to rehabilitation techniques. More specifically, at EPFL, I learned how to conduct EEG experiments and analyze the resulting data. I joined the Aging in Vision and Action Lab at the Vision Institute in November 2019.

Keywords:  Healthy aging, visual aging, spatial cognition/navigation, motion capture, eye-tracking, virtual reality, high-density EEG, mobile EEG, MoBI, ecological conditions.

CV and Publication List (pdf): [ download ]

Publications

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2022

  1. Ramanoel S, Durteste M, Delaux A, Habas C and Arleo A (2022) The neural underpinnings of visual information processing for spatial navigation in healthy aging. In 22nd conference of the European Society for Cognitive Psychology (ESCOP), Lille, France.
  2. Delaux A, Durteste M, Ariztegui A, Benziane B, Ramanoel S and Arleo A (2022) Functional implications of vertical coding biases in scene-selective regions on spatial orientation: evidence from source localized EEG recording. In Federation of European Neuroscience Societies (FENS), Paris, France.
  3. Ramanoel S, Durteste M, Delaux A, de Saint Aubert J-B and Arleo A (2022) Future trends in brain aging research: visuo-cognitive functions at stake during mobility and spatial navigation. Aging Brain, 2:100034.

2021

  1. Delaux A, de Saint Aubert J-B, Ramanoel S, Bécu M, Gehrke L, Klug M, Chavarriaga R, Sahel J-A, Gramann K and Arleo A (2021) Mobile brain/body imaging of landmark-based navigation with high-density EEG. European Journal of Neuroscience, 54(12):8256-8282.
  2. Sahel J-A, Boulanger-Scemama E, Pagot C, Arleo A, Galluppi F, Martel JN, Degli Esposti S, Delaux A, de Saint Aubert J-B, de Montleau C, Gutman E, Audo I, Duebel J, Picaud S, Dalkara D, Blouin L, M. T and Roska B (2021) Partial recovery of visual function in a blind patient after optogenetic therapy. Nature Medicine, doi:10.1038/s41591-021-01351-4.