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

Table 2

Classification accuracies in % employing ELM-R for the pairwise combinations, which shows the top five classification performances for each subject. Classification accuracies are expressed as mean and associated standard deviation.

Subjects
S1
	(/a/ versus /i/)	(/a/ versus mute)	(/a/ versus /u/)	(/a/ versus /e/)	(/i/ versus /o/)
S2
	(/a/ versus /i/)	(/i/ versus mute)	(/i/ versus /o/)	(/a/ versus mute)	(/o/ versus mute)
S3
	(/e/ versus mute)	(/i/ versus mute)	(/u/ versus mute)	(/o/ versus mute)	(/a/ versus /i/)
S4
	(/i/ versus mute)	(/u/ versus mute)	(/a/ versus mute)	(/e/ versus mute)	(/o/ versus mute)
S5
	(/e/ versus mute)	(/i/ versus mute)	(/o/ versus mute)	(/a/ versus mute)	(/u/ versus mute)