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Seminar Abstract

Mapping information use in active vision.

Speaker : Dr Sebastien Miellet, School of Psychology, University of Wollongong.
Date : 27th of November 2018, 12:00PM until 1:00PM
Location : Australian Hearing Hub, 3.610, Macquarie University.

    Characterising oculomotor strategies and the factors modulating them is a critical step in the specification of the information available to the brain and, in turn, what type of representations or processing can occur. In this talk, I will review various paradigms and data processing techniques that I have developed in the past few years in order to investigate visual information sampling and use in reading, face and scene processing. I will particularly focus on the use of gaze-contingent and reconstruction techniques to precisely isolate visual diagnostic information for face processing while taking into account individual differences and task influences. I will also illustrate why it is crucial to use data-driven, robust, statistical methods for mapping fixation densities. I will finally present new research directions on developmental aspects of active vision in real-life inspired situations, such as road-crossing, and particularly how changes in executive functioning across the lifespan modulate visual sampling strategies. Overall this approach provides a fine-grained characterisation of the developmental dynamics of active vision abilities underlying critical tasks for human beings. These findings provide empirical constraints for computational models and a benchmark to study active vision across distinct populations.

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