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The Spatial and Temporal Construction of Confidence in the Visual Scene

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  • Martin Graziano
  • Mariano Sigman

Abstract

Human subjects can report many items of a cluttered field a few hundred milliseconds after stimulus presentation. This memory decays rapidly and after a second only 3 or 4 items can be stored in working memory. Here we compared the dynamics of objective performance with a measure of subjective report and we observed that 1) Objective performance beyond explicit subjective reports (blindsight) was significantly more pronounced within a short temporal interval and within specific locations of the visual field which were robust across sessions 2) High confidence errors (false beliefs) were largely confined to a small spatial window neighboring the cue. The size of this window did not change in time 3) Subjective confidence showed a moderate but consistent decrease with time, independent of all other experimental factors. Our study allowed us to asses quantitatively the temporal and spatial access to an objective response and to subjective reports.

Suggested Citation

  • Martin Graziano & Mariano Sigman, 2009. "The Spatial and Temporal Construction of Confidence in the Visual Scene," PLOS ONE, Public Library of Science, vol. 4(3), pages 1-10, March.
    • Handle: RePEc:plo:pone00:0004909
    DOI: 10.1371/journal.pone.0004909
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    References listed on IDEAS

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    1. Stefano Baldassi & Nicola Megna & David C Burr, 2006. "Visual Clutter Causes High-Magnitude Errors," PLOS Biology, Public Library of Science, vol. 4(3), pages 1-1, February.
    2. Konrad P. Körding & Daniel M. Wolpert, 2004. "Bayesian integration in sensorimotor learning," Nature, Nature, vol. 427(6971), pages 244-247, January.
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    Cited by:

    1. Yue Deng & Yanyu Zhao & Yebin Liu & Qionghai Dai, 2013. "Differences Help Recognition: A Probabilistic Interpretation," PLOS ONE, Public Library of Science, vol. 8(6), pages 1-10, June.

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