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. 2014 Aug 20;9(8):e105308. doi: 10.1371/journal.pone.0105308

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© 2014 Seo 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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In the 0-back condition, participants were asked to press a button if a specific target letter “” appeared. In the N-back (N is 1 or 2) condition, they were asked to respond when a letter matched one that had been presented N letters before the present letter.

Inline graphic — In the 0-back condition, participants were asked to press a button if a specific target letter “” appeared. In the N-back (N is 1 or 2) condition, they were asked to respond when a letter matched one that had been presented N letters before the present letter.