Objective and Subjective Evaluation of Online Error Correction during P300-Based Spelling
(a) Correlation between the spelling accuracy (rate of correctly spelled letters) in session 5 (without considering the correction) and specificity of error detection. The green circle includes participants with low specificity while the red one includes participants with high specificity. (b) Global spelling accuracy as a function of . (c) Accuracy of error detection as a function of . Each diamond represents a participant, and values represent correlation coefficients.