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Douglas Crawford
Department of Psychology and Centre for Vision Research
York University

Retaining, updating, and integrating visual representations across saccades.

The neural and computational mechanisms for 'spatial updating' of motor plans during eye movements are fairly well understood, but less is known about the mechanisms for perceptual updating across eye movements. This talk will begin with an introduction to the parietal cortex mechanisms for spatial updating of saccade and reach targets, calling on data from psychophysical, fMRI, and neuropsychological experiments. We will then consider the capacity of the visual system for remembering and integrating spatial and feature information across eye movements. Finally, we will consider how the latter process is disrupted by TMS stimulation of the parietal cortex, suggesting the possibility of shared neural mechanisms for spatial updating in motor control and perception.