Vowel Imagery Decoding toward Silent Speech BCI Using Extreme Learning Machine with Electroencephalogram

Table 3

Confusion matrix for all pairwise combinations and subjects using ELM, ELM-L, ELM-R, SVM-R, and LDA.

	Classifiers
	ELM		ELM-L		ELM-R		SVM-R		LDA
	Condition positive	Condition negative	Condition positive	Condition negative	Condition positive	Condition negative	Condition positive	Condition negative	Condition positive	Condition positive
Test positive	2516	1234	2649	1101	2635	1115	3675	75	2556	1194
Test negative	1509	2241	1261	2489	1297	2453	3525	225	1398	2352
	Sensitivity = 0.6251	Specificity = 0.6449	Sensitivity = 0.6775	Specificity = 0.6933	Sensitivity = 0.6701	Specificity = 0.6875	Sensitivity = 0.5104	Specificity = 0.7500	Sensitivity = 0.6464	Specificity = 0.6633