Figure 7
Free communication results of Experiment 2. (a) Streams of brain-based free conversation. Each message was qualitatively scored as belonging to one of nine conversation topics. Each colour represents a topic, and each vertical grey line represents a message. Circles higher in the conversation thread for each topic represent messages sent by P1, while lower circles represent messages sent by P2. (b) Messages sent for the two participants (P1 & P2) as a function of ordinal message number and character count. Brighter colours indicate selection of keys later in the keyboard (row three). (c) Key selection counts for the two participants, including an EMG enter key [↵] activated by jaw clenching.
