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. 2015 Nov 12;10(11):e0142168. doi: 10.1371/journal.pone.0142168

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© 2015 Zhao 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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Fig 4 — (a) The User Interface for the SSVEP model displays live video in the middle window and flickers four images at four different frequencies on the periphery that represent different humanoid robot behaviors. (b) The flow diagrams describe the User Interface and the Robot Controller for the SSVEP model for an on-line control experiment.