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The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 3 Cutoff values of the posterior femoral cutaneous nerve sensory nerve action potential parameters

From: Posterior femoral cutaneous nerve sensory conduction study in a sample of apparently healthy Egyptian volunteers

PFCN SNAP parameters

Mean ± SD

Range

NL

Rounded NL

OL (ms)

2.04 ± 0.21

1.60–2.50

2.46

2.5

PL (ms)

2.86 ± 0.25

2.32–3.40

3.36

3.4

CV (m/s)

59.45 ± 6.36

48.40–76.90

46.73

46.7

SNAP amplitude (μV)

6.16 ± 2.29

1.90–10.70

1.58

1.6

  1. PFCN, posterior femoral cutaneous nerve; SNAP, sensory nerve action potential; OL, onset latency; PL, peak latency; CV, conduction velocity; SD, standard deviation; NL, upper (latency) or lower (conduction velocity and amplitude) limit of normal
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