Using psychophysical techniques,we probe the human observers' ability to analyse the curvature of the displacement pathway. We are also interested in the role of the gaze location in that ability to understand where the observer optimally pick up the information within the flow field. On-going experimental projects and main results. Role of texture information on curvature detection from optic flow field. Motion Perception during Eye Movements Eye movements play a key role in vision.
Saccades bring the image of the object of interest from the periphery to the fovea.
Smooth eye movements reduce the velocity of this foveal image when the object is moving. As a consequence, eye movements not only affect the location and the displacement of the objet image in the retinotopic frame of reference but also continuously affect the image of the stationary visual environnement. We are interested in the ability of the visual system to process the motion signals that are generated or affected by the oculomotor behavior. We also investigate whether or not such visual inflow is taken into account in solving spatial localisation problem. We are also investigating how a given oculomotor behavior might enhance visual performance by affecting the motion segmentation or integration processing.