The maintenance of spatial accuracy by the perisaccadic remapping of visual receptive fields

Humans and monkeys can direct their eyes to the spatial location of briefly flashed targets even when a saccade intervenes between the stimulus flash and the saccade to acquire its location. It had been proposed that the oculomotor system performs this task by resorting to a supraretinal representat...

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Bibliographic Details
Published in:Neural networks 1998-10, Vol.11 (7), p.1229-1240
Main Authors: Quaia, Christian, Optican, Lance M., Goldberg, Michael E.
Format: Article
Language:English
Subjects:
Frontal eye fields (FEF)
Lateral intraparietal cortex (LIP)
Saccades
Salience
Superior colliculus (SC)
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Summary:Humans and monkeys can direct their eyes to the spatial location of briefly flashed targets even when a saccade intervenes between the stimulus flash and the saccade to acquire its location. It had been proposed that the oculomotor system performs this task by resorting to a supraretinal representation of space. In this paper we review neurophysiological and clinical data suggesting that the brain can use a different strategy that does not require an explicit supraretinal representation of targets. We propose and implement a simple neural model that can keep track continuously of the location of saccade targets in eye-centered coordinates. Finally, based on recent data, we argue that such a neural mechanism is in fact used to keep track not only of saccade targets but of the location of salient areas of the visual scene in general.
ISSN:0893-6080
1879-2782
DOI:10.1016/S0893-6080(98)00069-0