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Article Dans Une Revue Journal of Neuroscience Année : 2023

Decoding Trans-Saccadic Prediction Error

Résumé

We are constantly sampling our environment by moving our eyes, but our subjective experience of the world is stable and constant. Stimulus displacement during or shortly after a saccade often goes unnoticed, a phenomenon called the saccadic suppression of displacement. Although we fail to notice such displacements, our oculomotor system computes the prediction errors and adequately adjusts the gaze and future saccadic execution, a phenomenon known as saccadic adaptation. In the present study, we aimed to find a brain signature of the trans-saccadic prediction error that informs the motor system but not explicit perception. We asked participants (either sex) to report whether a visual target was displaced during a saccade while recording electroencephalography (EEG). Using multivariate pattern analysis, we were able to differentiate displacements from no displacements, even when participants failed to report the displacement. In other words, we found that transsaccadic prediction error is represented in the EEG signal 100 ms after the displacement presentation, mainly in occipital and parieto-occipital channels, even in the absence of explicit perception of the displacement.
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Dates et versions

hal-04049674 , version 1 (24-01-2023)
hal-04049674 , version 2 (28-03-2023)

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Louise Catheryne Barne, Jonathan Giordano, Thérèse Collins, Andrea Desantis. Decoding Trans-Saccadic Prediction Error. Journal of Neuroscience, 2023, 43 (11), pp.1933 - 1939. ⟨10.1523/jneurosci.0563-22.2022⟩. ⟨hal-04049674v2⟩
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