Copy-spelling performance.

Performance rates of all individual participants and the grand average during random copy-spelling. Accuracies (P) are given in percentages of correct classifications together with the average trial time needed for classification (including overhead: inter-trial time). The Information Transfer Rate (ITR) and Symbols Per Minute (SPM) are estimated (including the inter-trial time). Note that the early-stopping pipeline was trained with a fixed targeted accuracy of 95 percent for all participants.