Evaluation of a Compact Hybrid Brain-Computer Interface System

Figure 5

(a) Grand average time courses of changes in deoxyhemoglobin (Δ[HbR]) and oxyhemoglobin (Δ[HbO]). The significance of each channel is shown horizontally at the bottom of each subplot. The red and blue solid lines correspond to MA-related and BL-related activation, respectively. A small gray shade depicts the baseline period of −5 to 0 s, and a large gray patch indicates the task period of 0 to 10 s. A solid vertical line indicates the onset of the task period. The units of the - and -axes are seconds and mol/L, respectively. (b) Time-dependent scalp plots of significance of Δ[HbR] and Δ[HbO] based on the r-value. A color bar on the right side denotes a scale of significance for both (a) and (b). The positive and negative values in the color bar indicate that MA-related activation shows higher and lower values than those of BL-related activation, respectively.

(a)

(b)