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Department of Cognitive Science

Seminar Abstract

The temporal dynamics of object representations: Using rapid serial presentation to probe the neural processes underlying visual perception.

Speaker : Dr Amanda Robinson, Department of Cognitive Science, Macquarie University.
Date : 17th of July 2018, 12:00PM until 1:00PM
Location : Australian Hearing Hub, Level 3, Room 3.610, Macquarie University.

    Humans easily recognise faces, words and many other objects in very short periods of time, despite the complex neural processes that subserve such tasks. In this talk, I will present results from three studies using rapid serial visual presentation (RSVP) paradigms and electroencephalography (EEG) to elucidate the temporal dynamics of object representations. First, I will show that face and word perception involve overlapping neural mechanisms that manifest in perceptual interference during RSVP, despite faces and words having vastly different visual properties. Secondly, using evoked responses in the frequency domain I will provide evidence suggesting that familiar and unfamiliar face perception is distinct at multiple stages of the visual hierarchy. Finally, I will touch on new results showing that neural representations for many different non-task-relevant objects can co-exist in the visual system at once. Taken together, these studies show that pushing the limits of temporal processing can help elucidate the dynamics of low-level and high-level visual object perception.

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    Telephone: (02) 9850 9599
    Fax : (02) 9850 6059
    Email : cogsci@mq.edu.au
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