From: The prediction of intraoperative cervical cord function changes by different motor evoked potentials phenotypes in cervical myelopathy patients
Types
Amplitude (μV)
Latency (ms)
Stability
I
> 300
< 50
Excellent
II
> 50
Good
100–300
III
Moderate
IV
20–100
–
Poor
V
0–20
Indeterminate/High Risk