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. 2017 Mar 17;11:129. doi: 10.3389/fnins.2017.00129

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Copyright © 2017 Zhang, Yin and Wang.

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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Simulation results of AA system with the proportional and threshold controller (participant A): (A) The operator task performance; (B) The number of manual control tasks allocated to the operator; (C) The operator CTL levels.