Table 2.

Mean amplitude, peak amplitude and latency for N1 and P1 components in CS and VR HMD environments at 1-back and 2-back levels of cognitive workload

	1-back		2-back
	CS	VR HMD	CS	VR HMD
N1
Mean amplitude (μV)
Frontal	− 0.6 ± 0.4	− 1.7 ± 0.5	0.1 ± 0.4	− 1.1 ± 0.4
Central	− 0.6 ± 0.4	− 1.2 ± 0.4	− 0.2 ± 0.4	− 0.8 ± 0.4
Peak amplitude (μV)
Frontal	− 2.2 ± 0.5	− 3.7 ± 0.6	− 2.0 ± 0.5	− 3.6 ± 0.5
Central	− 2.0 ± 0.4	− 2.9 ± 0.5	− 2.1 ± 0.4	− 2.9 ± 0.5
Peak latency (ms)
Frontal	160.8 ± 3.8	161.2 ± 2.9	164.7 ± 5.0	163.3 ± 2.8
Central	162.3 ± 4.1	158.8 ± 3.4	163.9 ± 3.8	158.5 ± 4.1
P1
Mean amplitude (μV)
Temporal	0.5 ± 0.4	0.7 ± 0.5	0.6 ± 0.4	0.5 ± 0.5
Occipital	0.9 ± 0.5	2.1 ± 0.7	1.0 ± 0.5	1.7 ± 0.8
Peak amplitude (μV)
Temporal	2.2 ± 0.4	2.6 ± 0.5	2.6 ± 0.5	2.9 ± 0.5
Occipital	2.8 ± 0.6	4.2 ± 0.9	3.4 ± 0.6	4.3 ± 1.0
Peak latency (ms)
Temporal	164.2 ± 2.9	156.0 ± 3.4	162.7 ± 3.5	157.8 ± 4.2
Occipital	168.9 ± 4.3	164.4 ± 2.4	165.6 ± 5.0	166.6 ± 3.5

Values (n = 20) are mean ± SEM