Computational Intelligence and Neuroscience / 2017 / Article / Tab 2

Research Article

Mental Task Evaluation for Hybrid NIRS-EEG Brain-Computer Interfaces

Table 2

EEG-only peak for each subject and task pair, when using features extracted from one-second windows. Task pairs and participants are shown in descending order of average , from top to bottom and left to right, respectively. values between 0.4 and 0.7 (satisfactory performance) are highlighted in italic font, whereas kappa values greater than 0.7 (high performance) are  highlighted in bold font. The average peak time with standard deviation is also included for each task pair. .

S10 S03 S07 S06 S05 S11 S01 S09 S04 Average Peak time (s)

ROT-MI 0.93 0.89 0.87 0.95 0.84 0.80 0.77 0.77 0.61 0.83 0.10 3.83 3.3
ROT-FACE 0.86 0.86 0.84 0.94 0.92 0.68 0.79 0.66 0.51 0.79 0.14 2.61 1.0
ROT-SING 1.00 0.80 0.86 0.81 0.90 0.71 0.81 0.56 0.53 0.78 0.15 5.61 4.4
ROT-NAV 0.96 0.72 0.83 0.61 0.68 0.58 0.75 0.58 0.63 0.70 0.13 4.06 1.0
SUB-MI 0.91 0.89 0.82 0.91 0.81 0.74 0.70 0.85 0.39 0.78 0.16 4.28 2.1
SING-SUB 0.99 0.72 0.73 0.82 0.89 0.65 0.77 0.68 0.42 0.74 0.16 2.50 1.6
SUB-FACE 0.65 0.84 0.71 0.88 0.87 0.62 0.76 0.68 0.37 0.71 0.16 6.39 5.0

ROT-WORD 0.96 0.74 0.69 0.61 0.90 0.62 0.56 0.50 0.53 0.68 0.16 5.94 5.3
NAV-MI 0.78 0.86 0.78 0.81 0.66 0.66 0.60 0.46 0.41 0.67 0.16 5.61 5.3
WORD-MI 0.96 0.61 0.75 0.88 0.57 0.64 0.58 0.63 0.44 0.67 0.16 5.83 3.8
WORD-FACE 0.75 0.73 0.67 0.87 0.73 0.64 0.65 0.44 0.36 0.65 0.16 6.06 3.9
SING-NAV 0.83 0.69 0.72 0.69 0.72 0.64 0.74 0.27 0.43 0.64 0.17 3.39 2.1
SUB-NAV 0.88 0.59 0.71 0.46 0.69 0.46 0.55 0.66 0.33 0.59 0.16 3.61 5.8
WORD-SING 0.88 0.66 0.73 0.84 0.53 0.53 0.73 0.36 0.35 0.62 0.19 5.61 6.6

ROT-SUB 0.72 0.60 0.66 0.39 0.38 0.53 0.66 0.50 0.43 0.54 0.13 4.06 5.2
WORD-SUB 0.88 0.69 0.42 0.63 0.75 0.37 0.40 0.68 0.44 0.58 0.18 3.94 2.9
NAV-FACE 0.53 0.79 0.54 0.80 0.82 0.49 0.44 0.28 0.28 0.55 0.21 5.39 4.8
WORD-NAV 0.79 0.55 0.63 0.41 0.46 0.50 0.48 0.35 0.30 0.50 0.15 3.17 2.8
SING-MI 0.78 0.56 0.39 0.47 0.36 0.41 0.25 0.38 0.40 0.44 0.15 2.39 2.4
FACE-MI 0.62 0.60 0.37 0.42 0.35 0.49 0.21 0.350.51 0.44 0.13 1.61 2.2
SING-FACE 0.63 0.47 0.30 0.50 0.39 0.28 0.25 0.27 0.22 0.37 0.14 5.06 5.5
Average 0.82 0.71 0.67 0.70 0.68 0.57 0.59 0.52 0.42 0.63 0.16 4.33 3.7