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Spaak E, Fonken Y, Jensen O, et al. The Neural Mechanisms of Prediction in Visual Search. Cereb Cortex. 2015;26(11):4327-4336doi: 10.1093/cercor/bhv210.
Spaak, E., Fonken, Y., Jensen, O., & de Lange, F. P. (2016). The Neural Mechanisms of Prediction in Visual Search. Cerebral cortex (New York, N.Y. : 1991), 26(11), 4327-4336. https://doi.org/10.1093/cercor/bhv210
Spaak, Eelke, et al. "The Neural Mechanisms of Prediction in Visual Search." Cerebral cortex (New York, N.Y. : 1991) vol. 26,11 (2016): 4327-4336. doi: https://doi.org/10.1093/cercor/bhv210
Spaak E, Fonken Y, Jensen O, de Lange FP. The Neural Mechanisms of Prediction in Visual Search. Cereb Cortex. 2016 Oct 17;26(11):4327-4336. doi: 10.1093/cercor/bhv210. Epub 2015 Sep 22. PMID: 26400919; PMCID: PMC5066824.
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Cereb Cortex. 2016 Oct 17;26(11):4327-4336. doi: 10.1093/cercor/bhv210. Epub 2015 Sep 22.

The Neural Mechanisms of Prediction in Visual Search.

Cerebral cortex (New York, N.Y. : 1991)

Eelke Spaak, Yvonne Fonken, Ole Jensen, Floris P de Lange

Affiliations

  1. Donders Institute for Brain, Cognition, and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, 6525 EN Nijmegen, The Netherlands.
  2. Donders Institute for Brain, Cognition, and Behaviour, Centre for Cognitive Neuroimaging, Radboud University, 6525 EN Nijmegen, The Netherlands Helen Wills Neuroscience Institute, University of California at Berkeley, Berkeley, CA 94720, USA.

PMID: 26400919 PMCID: PMC5066824 DOI: 10.1093/cercor/bhv210

Abstract

The speed of visual search depends on bottom-up stimulus features (e.g., we quickly locate a red item among blue distractors), but it is also facilitated by the presence of top-down perceptual predictions about the item. Here, we identify the nature, source, and neuronal substrate of the predictions that speed up resumed visual search. Human subjects were presented with a visual search array that was repeated up to 4 times, while brain activity was recorded using magnetoencephalography (MEG). Behaviorally, we observed a bimodal reaction time distribution for resumed visual search, indicating that subjects were extraordinarily rapid on a proportion of trials. MEG data demonstrated that these rapid-response trials were associated with a prediction of (1) target location, as reflected by alpha-band (8-12 Hz) lateralization; and (2) target identity, as reflected by beta-band (15-30 Hz) lateralization. Moreover, we show that these predictions are likely generated in a network consisting of medial superior frontal cortex and right temporo-parietal junction. These findings underscore the importance and nature of perceptual hypotheses for efficient visual search.

© The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: [email protected].

Keywords: MEG; expectation; perception; rapid resumption; visual search

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