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. 2018 Jan 23;13(1):e0191673. doi: 10.1371/journal.pone.0191673

Fig 7. Median power spectrum of all subjects and the power spectrum of a representative subject (Subject 18) depending on the online conditions: Control, Speaking, Thinking, and Listening.

Fig 7

Power was averaged across trials. The activity relates to all flickering frequencies. Each trace represents one of the 60 EEG channels.