. 2020 Oct 19;12:566391. doi: 10.3389/fnagi.2020.566391

TABLE 2.

Comparison of task effect (target–non-target) P3 peak response at baseline and 2-week follow-up.

Variable	Baseline	Follow-up	Pearson r	ICC (95% CI)
0-back, Fz amplitude (μV)	4.87 (3.23)	5.02 (3.13)	0.63^a	0.82 (0.67–0.90)^a
0-back, Fz latency (ms)	291.49 (49.98)	293.31 (40.26)	0.38^b	0.54 (0.13–0.76)^b
0-back, Cz amplitude (μV)	2.71 (2.46)	2.59 (2.20)	0.56^a	0.73 (0.48–0.85)^a
0-back, Cz latency (ms)	289.49 (55.06)	290.03 (46.57)	0.30^b	0.51 (0.07–0.74)^a
0-back, Pz amplitude (μV)	1.94 (1.47)	2.01 (2.00)	0.38^b	0.54 (0.11–0.76)^b
0-back, Pz latency (ms)	309.74 (62.36)	315.92 (63.96)	0.34^b	0.52 (0.08–0.75)^b
0-back, F3 amplitude (μV)	3.99 (2.80)	4.29 (2.41)	0.58^a	0.74 (0.49–0.86)^a
0-back, F3 latency (ms)	297.33 (45.51)	295.51 (38.37)	0.31^b	0.47 (−0.02 to 0.72)^b
0-back, F4 amplitude (μV)	4.29 (2.93)	4.44 (2.72)	0.62^a	0.77 (0.56–0.88)^a
0-back, F4 latency (ms)	300.54 (52.41)	297.95 (35.36)	0.31	0.45 (−0.05 to 0.71)^b
1-back, Fz amplitude (μV)	3.97 (3.27)	4.08 (3.76)	0.78^a	0.87 (0.76–0.93)^a
1-back, Fz latency (ms)	300.90 (38.45)	300.26 (45.77)	0.31	0.47 (−0.02 to 0.72)^a
1-back, Cz amplitude (μV)	3.48 (3.05)	3.56 (3.02)	0.79^a	0.86 (0.74–0.92)^a
1-back, Cz latency (ms)	302.11 (37.55)	300.03 (42.39)	0.33	0.44 (−0.04 to 0.70)^a
1-back, Pz amplitude (μV)	1.64 (1.51)	1.54 (1.70)	0.58^a	0.73 (0.48–0.86)^a
1-back, Pz latency (ms)	318.44 (66.66)	309.97 (64.17)	0.26	0.42 (−0.11 to 0.69)^b
1-back, F3 amplitude (μV)	3.30 (3.43)	3.42 (3.47)	0.76^a	0.87 (0.74–0.93)^a
1-back, F3 latency (ms)	301.92 (44.80)	300.67 (49.86)	0.38^b	0.55 (0.14–0.77)^b
1-back, F4 amplitude (μV)	3.51 (2.95)	3.46 (3.37)	0.68^a	0.81 (0.64–0.90)^a
1-back, F4 latency (ms)	304.44 (43.16)	311.03 (45.42)	0.59^a	0.75 (0.51–0.87)^a
2-back, Fz amplitude (μV)	3.39 (2.29)	3.21 (2.15)	0.36^b	0.53 (0.09–0.75)^b
2-back, Fz latency (ms)	300.97 (39.67)	303.68 (45.65)	0.09	0.17 (−0.60 to 0.49)
2-back, Cz amplitude (μV)	2.28 (1.26)	2.08 (1.65)	0.39^b	0.51 (0.12–0.78)^b
2-back, Cz latency (ms)	300.63 (49.62)	302.21 (45.84)	0.31	0.46 (−0.04 to 0.70)
2-back, Pz amplitude (μV)	1.24 (1.20)	1.38 (1.83)	−0.03	−0.06 (−1.04 to 0.44)
2-back, Pz latency (ms)	318.74 (66.70)	321.63 (63.18)	0.08	0.15 (−0.63 to 0.56)
2-back, F3 amplitude (μV)	2.89 (2.03)	2.30 (1.65)	0.38^b	0.54 (0.11–0.76)^b
2-back, F3 latency (ms)	297.29 (47.56)	292.89 (46.84)	0.30	0.47 (−0.03 to 0.72)^b
2-back, F4 amplitude (μV)	3.37 (2.32)	3.23 (1.89)	0.46^b	0.63 (0.28–0.81)^a
2-back, F4 latency (ms)	306.26 (44.99)	308.92 (43.12)	0.09	0.16 (−0.61 to 0.56)

Abbreviations: ICC, Intraclass correlation coefficient; CI, confidence interval. ^ap < 0.0001. ^bp < 0.05.