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. 2013 Oct 18;8(10):e77536. doi: 10.1371/journal.pone.0077536

Figure 2. Scheme of a single experimental trial.

Figure 2

Resting period lasted 6(at 0 s.), the subject was instructed by a voice command to which of the fields he or she should attend. The signals from −6 to −2 s. of the resting epoch and signal from 0 to 4 s. of the stimulation epoch were selected for further analysis as No Visual Stimulation Epochs and Visual Stimulation Epochs, respectively.