Event-related potentials reveal rapid verification of predicted visual input.
Where this comes from
- Record sourced from PubMed, PMID 19333386.
- Also identified by DOI 10.1371/journal.pone.0005047 and PMC identifier 2659434.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Human information processing depends critically on continuous predictions about upcoming events, but the temporal convergence of expectancy-based top-down and input-driven bottom-up streams is poorly understood. We show that, during reading, event-related potentials differ between exposure to highly predictable and unpredictable words no later than 90 ms after visual input. This result suggests an extremely rapid comparison of expected and incoming visual information and gives an upper temporal bound for theories of top-down and bottom-up interactions in object recognition.
Medical subject headings
- Evoked Potentials
- Vision, Ocular
- Visual Perception