Neurophysiologic evaluation of patients with cervical spondylotic myelopathy

Table 3 Comparison of neurophysiological data in the study population

Characteristics	Patients N = 20 Mean ± SD	Controls N = 20 Mean ± SD	p-value
H-reflex latency, ms	17.87 ± 2.17	16.69 ± 1.76	0.075
H/M amplitude ratio	0.32 ± 0.2	0.25 ± 0.11	0.154
CuSP onset, ms	82.9 ± 15.45	77.04 ± 8.27	0.008*
CuSP duration, ms	32.72 ± 7.27	46.37 ± 5.43	< 0.001*
CoSP onset, ms	53.82 ± 8.54	54.0 ± 10.92	0.953
CoSP duration, ms	53.28 ± 14.35	86.13 ± 20.79	< 0.001*

CuSP cutaneous silent period, CoSP cortical silent period, *Statistically significant at ≤ 0.05