Skip to main content

Table 1 Results of the online study.

From: Online detection of error-related potentials boosts the performance of mental typewriters

Participant

Nr.

Spelling without

Training Set

Performance

Training Set

Performance

code

Rep.

ErrP detection

of Classifier A

of Classifier A

of Classifier B

of Classifier B

  

(Accuracy l1, l2/Speed)

(Trials/Errors)

(AUC/Speed)

(Trials/Errors)

(AUC/Speed)

gbo

2

64.7%, 73.7%/0.9

317/47 (14.8%)

0.83/1.5

364/114 (31.3%)

0.97/2.4

bad

2

64.4%, 72.7%/1.2

294/45 (15.3%)

0.85/1.6

481/145 (30.1%)

0.97/2.3

iae

1

66.3%, 75.8%/1.3

309/50 (16.2%)

0.75/2.0

315/62 (19.7%)

0.96/2.8

gbq

2

67.5%, 76.1%/1.2

315/51 (16.2%)

0.62/1.2

402/112 (30.3%)

0.96/2.4

gbt

4

84.1%, 89.1%/2.3

370/59 (15.9%)

0.80/1.8

230/26 (11.3%)

0.93/1.9

iac

2

76.1%, 82.8%/1.7

285/45 (15.8%)

0.83/2.3

291/64 (22.0%)

0.91/2.4

gbn

2

76.8%, 86.6%/1.9

330/51 (15.5%)

0.82/2.4

287/57 (19.9%)

0.87/2.5

gbw

7

81.6%, 85.6%/1.3

415/63 (15.2%)

0.87/1.4

255/35 (13.7%)

0.84/1.3

iau

3

75.3%, 85.8%/1.9

364/60 (16.5%)

0.69/1.6

224/49 (21.9%)

0.79/2.2

mk

3

72.1%, 83.0%/1.9

308/46 (14.9%)

0.69/1.5

290/50 (17.2%)

0.75/1.5

fat

4

98.5%, 99.0%/2.7

379/60 (15.8%)

0.95/2.6

169/2 (1.2%)

0.99/2.7

Mean

2.9

75.2%, 82.7%/1.7

335/52 (15.6%)

0.79/1.8

301/66 (19.9%)

0.90/2.2

SE

0.5

3.1, 2.4/0.2

27/4 (1.3)

0.03/0.1

27/13 (2.7)

0.02/0.1

  1. Column 2: The number of sequence repetitions used for the Center Speller. Column 3: Overall spelling accuracies for each of the two levels and the spelling speed for spelling without ErrP detection. Columns 4 and 6: The number of training samples and the proportion of error trials for classifier A and B, respectively. Columns 5 and 7: The ErrP detection performance of the two classifiers as area under the ROC curve, as well as the spelling speed in char/min when using the two classifiers, respectively