TABLE 3.

Summary of APB MEP Onset Latency and APB CMCT Data

	Total	MC1	MC2	MC3	HSI	No HSI
MEP
Neu, ms	23.80 ± 3.81	23.27 ± 3.41	24.77 ± 4.60	25.89 ± 4.08	25.76 ± 4.45	22.58 ± 2.73
Flex, ms	24.42 ± 3.87	23.87 ± 3.45	25.44 ± 4.67	26.51 ± 4.14	26.62 ± 4.42	23.05 ± 2.72
Ext, ms	24.46 ± 3.90	23.98 ± 3.53	25.24 ± 4.74	26.47 ± 3.83	26.65 ± 4.39	23.10 ± 2.79
CMCT
Neu, ms	8.76 ± 3.76	8.69 ± 3.56	9.87 ± 4.14	11.20 ± 3.70	10.50 ± 4.32	8.31 ± 3.11
Flex, ms	9.77 ± 3.84	9.30 ± 3.64	10.51 ± 4.22	11.78 ± 3.76	11.34 ± 4.30	8.79 ± 3.17
Ext, ms	9.81 ± 3.82	9.42 ± 3.65	10.33 ± 4.28	11.79 ± 3.54	11.41 ± 4.30	8.82 ± 3.12
ΔFlex (%)	8.34 ± 14.36	8.62 ± 14.19	8.32 ± 15.73	6.20 ± 13.11	10.38 ± 15.86	7.07 ± 13.25
ΔExt (%)	8.91 ± 15.15	9.99 ± 15.39	6.07 ± 15.99	6.55 ± 10.11	10.92 ± 15.67	7.66 ± 14.73

Δ indicates delta; APB, abductor pollicis brevis muscle; CMCT, central motor conduction time; Ext, neck extension; Flex, neck flexion; HSI, high signal intensity; MC, Muhle classification grade; MEP, motor evoked potential; Neu, neck neutral.