Decoding the Influence of Anticipatory States on Visual Perception in the Presence of Temporal Distractors
16 Pages Posted: 5 Apr 2018 Publication Status: Review CompleteMore...
While it has long been recognised that anticipatory states amplify early EEG responses to visual targets in humans, it remains unclear how such modulations relate to the actual content of the neural representation. Using multivariate orientation decoding of high temporal‐resolution EEG recordings, we demonstrate that anticipation also increases the amount of stimulus‐identity information contained in these early brain responses. Furthermore, this approach enabled us to characterize the influence of temporally adjacent distractors on target identity decoding, revealing that anticipation did not just attenuate distractor interference on target representations but, instead, delayed it. Enhanced target decoding and distractor resilience were further predicted by the attenuation of posterior 8‐14 Hz alpha oscillations. The findings offer several novel insights into how anticipatory states prioritise relevant sensory input in time, and they highlight the potential of non‐invasive multivariate electrophysiology to track cognitive influences on perception in tasks with rapidly changing displays.
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