Objective and Subjective Evaluation of Online Error Correction during P300-Based Spelling

Figure 6

Error detection sensitivity as a function of error detection specificity. All subjects are represented as well as the global metasubject (triangle) and the two metasubjects for the low specificity (circle) and high specificity (square) groups, respectively. The lines are the boundaries above which the automatic correction becomes fruitful, for the three groups (plain, dotted, and dashed, resp.).