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- Title
Decoding Trans-Saccadic Memory.
- Authors
Edwards, Grace; Van Rullen, Rufin; Cavanagh, Patrick
- Abstract
We examine whether peripheral information at a planned saccade target affects immediate postsaccadic processing at the fovea on saccade landing. Current neuroimaging research suggests that presaccadic stimulation has a late effect on postsaccadic processing, in contrast to the early effect seen in behavioral studies. Human participants (both male and female) were instructed to saccade toward a face or a house that, on different trials, remained the same, changed, or disappeared during the saccade. We used a multivariate pattern analysis of electroencephalography data to decode face versus house processing directly after the saccade. The classifier was trained on separate trials without a saccade, where a house or face was presented at the fovea. When the saccade target remained the same across the saccade, we could reliably decode the target 123 ms after saccade offset. In contrast, when the target was changed during the saccade, the new target was decoded at a later time-point, 151 ms after saccade offset. The "same" condition advantage suggests that congruent presaccadic information facilitates processing of the postsaccadic stimulus compared with incongruent information. Finally, the saccade target could be decoded above chance even when it had been removed during the saccade, albeit with a slower time course (162 ms) and poorer signal strength. These findings indicate that information about the (peripheral) presaccadic stimulus is transferred across the saccade so that it becomes quickly available and influences processing at its expected new retinal position (the fovea).
- Subjects
SACCADIC eye movements; MEMORY testing; ASSOCIATION of ideas; FACE; BRAIN imaging; ELECTROENCEPHALOGRAPHY; BRAIN stimulation
- Publication
Journal of Neuroscience, 2018, Vol 38, Issue 5, p1114
- ISSN
0270-6474
- Publication type
Article
- DOI
10.1523/JNEUROSCI.0854-17.2017