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. 2017 May 22;11:286. doi: 10.3389/fnins.2017.00286

Figure 4.

Figure 4

End user 5 during testing of the prototype. (A) depicts the user wearing a medium sized electrode cap with the gel-based electrodes. (B) shows him in his wheelchair during testing on day 1. (C) is a picture taken on day 2 of testing and (D) a close up of the electrode cap with the reference electrode attached to the right earlobe. End user 5 gained control over the system. Pictures are published with consent from the participant and his legal representative.