Information Transfer Rate (ITR) values for both BCIs and each patient with respect to the stimulation time per symbol.

<p>Note that for all subjects except S3, ITR could get from twice up to four times higher for the SSVEP-based BCI than for the P3-based one.</p

Parameters of the P3-based BCI (the number of sessions field does not include the preliminary session).

<p>Parameters of the P3-based BCI (the number of sessions field does not include the preliminary session).</p

Results from the SSVEP scanning experiment: amplitude spectrum of the EEG response to the 10 Hz flickering square at electrode site <i>Oz</i> for each patient.

<p>Note that for all patients, a peak at the stimulation frequency (and sometimes at its harmonic) can be observed in the amplitude spectrum.</p

Boxplots of the values for the Information Transfer Rate (ITR, bit/min) and the subjects' rating of the system (values ranging from 0 to 100) including satisfaction (SA), raw TLX (RTLX) and the 6 components of the NASA-TLX: mental demand (MD), physical demand (PD), temporal demand (TD), own performance (OP), effort (EF) and frustration (FR) for both BCI systems.

<p>An asterisk (*) denotes statistical significance at and NS stands for <i>Non-Significant</i> (Wilcoxon signed-rank test).</p

P3 BCI: row/column stimulation.

<p>P3 BCI: row/column stimulation.</p

Clinical description and level of disability (ALSFRS-R and Patterson scales) for all patients.

<p>Clinical description and level of disability (ALSFRS-R and Patterson scales) for all patients.</p

SSVEP BCI: 3 stimulation levels.

<p>SSVEP BCI: 3 stimulation levels.</p

Patients' global Information Transfer Rate values (ITR), their responses to the NASA-TLX questionnaire, associated Raw TLX (RTLX) values, satisfaction and quality of life values for each BCI.

<p>The RTLX is the mean of the values given by the patients to each of the 6 subscales of the NASA-TLX questionnaire (all values ranging from 0 to 100): mental demand (MD), physical demand (PD), temporal demand (TD), own performance (OP), effort (EF) and frustration (FR). SA denotes the satisfaction index (ranging from 0 to 100) and QoL the quality of life index (ranging from −5 to +5).</p

Parameters of the SSVEP-based BCI (the number of sessions field does not include the preliminary session).

<p>Parameters of the SSVEP-based BCI (the number of sessions field does not include the preliminary session).</p

Results from the oddball experiment: average responses to target and non-target stimuli at electrode site <i>FCz</i> from 200 ms before stimulus onset until 800 ms after.

<p>Results from the oddball experiment: average responses to target and non-target stimuli at electrode site <i>FCz</i> from 200 ms before stimulus onset until 800 ms after.</p