Research Article

Wavelet-Based Semblance Methods to Enhance the Single-Trial Detection of Event-Related Potentials for a BCI Spelling System

Table 1

Letter accuracy for the METS, minimax, universal, and SURE denoising algorithms over 22 subjects of the UAM dataset. Descriptive statistics for all the subjects on letter accuracy are reported (average, standard deviation (SD), min., and max.).

MethodAverageSDMin.Max.

[0.1–20] Hz filter53.6014.1428.2579.52
SURE54.8013.9033.0278.57
Minimax55.0013.9332.7079.05
Universal55.0713.9233.0279.05
METS55.2013.6933.6579.05

The best performances are highlighted in bold.