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. 2014 Feb 25;5:21. doi: 10.3389/fpsyt.2014.00021

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Copyright © 2014 Rahm, Liberg, Kristoffersen-Wiberg, Aspelin and Msghina.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Study design. We used a combined Stroop paradigm: affective counting Stroop (aStroop), and cognitive counting Stroop (cStroop) intertwined. The test subjects were examined in two scanning sessions, the second one 4 h after intake of escitalopram (corresponding to C-max). The subjects were blinded to the tablet, and they were instructed that they were to see sets of one to four identical words appearing on the screen and that they should report, via button-press, the number of words in each set, regardless of what the words are.