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Perception and Attention

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E. Castet (DR2)
F. Vitu-Thibault (DR2)

P. Courrieu (CR1), J. Grainger (DRCE),Y. Marzouki (MC), T. Ripoll (PR)

J.-B. Bernard, M. Declerck, D. Massendari, S. Mathôt, I. Stoianov

C. Albrengues (co-dir), V. Dusaucy, J. Snell, L. Van Der Linden

Our research focuses on the study of perceptual, attentional and oculomotor processes involved in everyday tasks such as reading, the processing of natural visual scenes and the recognition of familiar shapes (letters, words, objects and handwriting). It investigates (1) the mechanisms involved in the programming of saccadic eye movements, (2) the orientation of visual attention and its relationship with eye movements and pupil constriction/dilation, (3) intra-saccadic visual perception and the integration of information across saccades, (4) attention and visual short term memory, (5) the visual constraints that affect letter perception (e.g., crowding), (6) the nature and role of orthographic processing in word recognition, (7) the role of attention in the processing of adjacent words, (8) the modeling of shape, letter and word recognition, (9) the study and modeling of eye movements during reading, with an emphasis on oculomotor mechanisms and perceptual processes, as well as their interactions with language-related processes, (10) oculomotor control, visual perception and reading with a central scotoma, (11) the influence of visual salience and object-identification processes on eye guidance during the perception of natural scenes.

Our work relies on a wide variety of methodologies and techniques classically used in experimental psychology, psychophysics and behavioral and computational neuroscience. These include the measurement of detection and discrimination thresholds, reaction times, perceptual identification performance, event-related potentials, eye movements, functional imaging and modelling. Part of our research is conducted on low-vision patients, and in particular patients with Age-related Macular Degeneration (AMD).


Main topics:

 - active vision : interaction between visual processes, attention and eye movements

- text reading

- word recognition

- exploration of visual scenes

- psychophysics of low vision

- pupillometry