Fig. 3From: Detecting number processing and mental calculation in patients with disorders of consciousness using a hybrid brain-computer interface systemGrand-average P300 ERP waveforms from the “Pz” electrode in Run 1 (left panels), Run 2 (middle panels) and Run 3 (right panels) for five patients (VS2, VS4, MCS1, EMCS1, and EMCS2) and a healthy control. The red curves corresponding to target button frames contained P300 responses, whereas the blue curves corresponding to non-target button frames did notBack to article page