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. 2013 Oct 21;8(10):e76467. doi: 10.1371/journal.pone.0076467

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© 2013 Jahfari et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The two sample paths represent accumulation of evidence from a presented female face stimulus; resulting in either a correct (black line) or incorrect response (grey line). As shown in the RT histograms, responses more often accumulate towards a correct choice (above) than an incorrect choice (below). Drift rate () represents the average amount of evidence accumulated per time unit. Boundary separation () represents how much evidence is needed before a definitive response is made.

Inline graphic — The two sample paths represent accumulation of evidence from a presented female face stimulus; resulting in either a correct (black line) or incorrect response (grey line). As shown in the RT histograms, responses more often accumulate towards a correct choice (above) than an incorrect choice (below). Drift rate () represents the average amount of evidence accumulated per time unit. Boundary separation () represents how much evidence is needed before a definitive response is made.