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. 2014 Aug 22;8:67. doi: 10.3389/fnint.2014.00067

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Copyright © 2014 Noorani.

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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LATERian model of the go/no-go task, in which there are three competing units. The existence unit is activated by any visual stimulus regardless of color, generally producing faster responses. The color unit is activated when a stimulus of the correct color appears, but there is an extra 60 ms delay before it is activated representing the time for color information to arrive in cortex. The stop unit is similarly activated at the same time to cancel the impending non-selective response from the existence unit. Modified with permission from Noorani et al. (2011).