Figure 4.
Classification accuracies of the ECoG-based decoding of vowels and consonants during overt and covert speech, respectively. Red lines: median values. Box plots: standard deviations. Black lines: minimum/maximum. Chance accuracy is 25%. (A) consonant decoding accuracy for overt/covert word repetition; (B) vowel decoding accuracy for overt/covert word repetition.
