Research project: “Visual” Imitation research project in early blind people

INVITATION: participate in the “Visual” Imitation research project in early blind people

You are invited to participate in a research project led by Mr. Maurice Ptito, Full Professor, at the Laboratory of Plasticity and Development of the Visual System at the School of Optometry of the University of Montreal.

This project aims to assess the ability to perceive, identify and imitate movements with the Tongue Display Unit (TDU) sensory substitution device. The TDU is a device that allows you to feel, through a plate of electrodes affixed to the tongue, the images captured by a camera.


If you agree to participate:

  • a member of the research team will contact you by telephone to explain in detail the course of the experiment.
  • The experiment will take place in a single session lasting approximately three hours.
  • It will be performed at the School of Optometry of the University of Montreal (3744 rue Jean Brillant, Montreal, H3T 1P1).

The session will focus on the perception of shapes in different contexts and on the perception of movements in depth with the TDU. You will have to observe, identify and imitate arm movements on the vertical axis (from top to bottom).


If you are interested in this project or if you have any questions regarding this project:

Do not hesitate to ask questions. The attached information and consent form explains the procedures in detail.



  • Samuel Paré, M.Sc., research assistant
  • Maxime Bleau, M.Sc.,research assistant
  • Maurice Ptito, Ph.D., lead researcher
    Professor, School of Optometry, Université de Montréal;
    Adjunct Professor, Department of Neurology and Neurosurgery,McGill University / Montreal Neurological Institute;
    Holder of the Hartland-Sanders Research Chair for Vision Health;
    Researcher, CRIR- Institut Nazareth et Louis-Braille, CISSS de la Montérégie-CentreWebsite: 

Recruitment of participants for this research project will end in January 2024.