Table 1.
Reference | Brain area | Features | Classification accuracy (%) |
---|---|---|---|
NIRS-based system | |||
Coyle et al.50 | Motor cortex | HbO value | 75 |
Coyle et al.51 | Motor cortex | HbO value | 70 to 90 |
Sitaram et al.52 | Bil motor cortex | Mean of and HbR | 89.1 |
Holper and Wolf53 | Secondary motor cortex | HbO signals (mean, variance, skewness, and kurtosis) | 81 |
Naseer and Hong54 | Bil motor cortex | HbO signals (mean and slope of ) | 87.2 |
Hong et al.55 | Motor cortex and PFC | HbO signals (mean and slope of ) | 75.7 (three class: right/left/arithmetic) |
EEG-NIRS hybrid system | |||
Fazli et al.56 | Bil motor cortex | NIRS: mean of and HbR EEG: power | 83.1 |
Koo et al.57 | Bil motor cortex | NIRS: EEG: power and variance | 88 (self-paced) |
Yin et al.58 | Bil motor cortex | NIRS: signals from HbR, HbO, HbT, HbO-HbR, light absorption (two wavelengths) EEG: power, instantaneous phase, instantaneous amplitude, and instantaneous frequency | 89 |
Buccino et al.59 | Bil motor cortex | NIRS: mean and slope of and HbR EEG: power and variance | 72.2 (right/left) |
Note: PFC, prefrontal cortex; HbO, oxygenated hemoglobin; HbR, deoxygenated hemoglobin; and HbT, total hemoglobin.