Single subject data (sentence condition).

<p>ERP effects (frontal negativity and parietal positivity) of single subjects observed during processing of false and true negated sentences. Columns show amplitude values (in µV) averaged for the frontal or parietal electrode clusters. The + indicates subjects showing larger effects for false compared to true negated statements. The – characterizes subjects showing the opposite effects. Last rows: Total number of subjects (%) showing the pattern false>true.</p

Changes in heart rate during reading of body words and neutral words from 0–5 seconds after word onset.

<p>The time interval from 5–10 seconds represents the interstimulus interval following word offset.</p

Valence and arousal ratings of body words and neutral words in females scoring high or low on the three diagnostically relevant subscales of the Eating Disorder Inventory.

<p>Note: For valence and arousal, ratings ranged from 1 (extremely negative valence, extremely low arousal) to 9 (extremely positive valence, extremely high arousal).</p

Self-report data (questionnaires).

<p>Self-report data (questionnaires).</p

Startle modulation during reading of body words and neutral words in females reporting high (N = 17) vs. low (N = 18) body dissatisfaction on the EDI subscale body dissatisfaction.

<p>Startle modulation during reading of body words and neutral words in females reporting high (N = 17) vs. low (N = 18) body dissatisfaction on the EDI subscale body dissatisfaction.</p

Grand average ERD/ERS for class combination. <i>left-right</i> and intervention groups in Berlin.

<p>‘N’ is the number of participants of each group. From left to right: runs 1–3, runs 4–5, runs 6–7. The time plots in the first rows picture the evolution of the ERD/ERS for about 6000 ms at C3 (thick lines) and C4 (thin lines). At time 0 is the onset of the cue, at times 1000–4000 the display of the feedback. Magenta lines refer to <i>left</i> MI trials, green lines to <i>right</i> MI trials. The scalp plots underneath refer to the shaded areas of the time plots and show the distribution of the ERD/ERS. In the second rows, the scalp plots of the <i>left</i> MI trials, in the third rows the scalp plots of the <i>right</i> MI trials and in the fourth the scalp plots of the sign-r².</p

Mean BCI feedback accuracies for each intervention group (Control, PMR, 2HAND) over runs 4–7 (left) and run-wise (right).

<p>‘B’ refers to participants of Berlin and ‘W’ to participants of Würzburg. PMR W has significantly higher mean BCI performance compared to Control W (p<0.05), marked with a star in the bar plot.</p

Schematic flowchart of the online protocol.

<p>The EEG processing and adaptation protocol during runs 1–3 with positive biased feedback are depicted in blue, in yellow the processing and adaptation during runs 4–5 with real feedback, in green the processing and adaptation during runs 6–7 also with real feedback. The adaptation applied in runs 1–3 and 4–5 uses supervised methods, the adaptation of runs 6–7 uses unsupervised methods. In magenta are depicted the phases of subject-specific features selection (e.g. frequency band, CSP filters, etc) and training of the classifier that happened two times, i.e. after runs 1–3 and after runs 4–5.</p

Overview of BCI performances sorted in ascendent order.

<p>For each participant, the black crosses indicate the overall mean feedback accuracy and the colored stars the accuracies of the four feedback runs (4–7). The participants of Berlin are displayed in magenta and the ones of Würzburg in green. The accuracies of each participant are connected by colored lines that emphasize the variance of the accuracies between runs. The dotted gray lines represent the accuracy considered necessary for BCI control (70%) and the threshold for accuracy significantly higher than chance (54.69%).</p

Grand average ERD/ERS for class combination <i>left-right</i> and intervention groups in Würzburg.

<p>‘N’ is the number of participants of each group. From left to right: runs 1–3, runs 4–5, runs 6–7. The time plots in the first rows picture the evolution of the ERD/ERS for about 6000 ms at C3 (thick lines) and C4 (thin lines). At time 0 is the onset of the cue, at times 1000–4000 the display of the feedback. Magenta lines refer to <i>left</i> MI trials, green lines to <i>right</i> MI trials. The scalp plots underneath refer to the shaded areas of the time plots and show the distribution of the ERD/ERS. In the second rows, the scalp plots of the <i>left</i> MI trials, in the third rows the scalp plots of the <i>right</i> MI trials and in the fourth the scalp plots of the sign-r².</p