title: Normative data for lateral femoral cutaneous nerve SEPs.
abstract: OBJECTIVE
  To determine normative values for somatosensory evoked potentials (SEPs) of the lateral femoral cutaneous nerve (LFCN).
  
  
  METHODS
  The LFCN was stimulated at two points, one located 1 cm lateral to the midpoint of a line joining the anterior superior iliac spine (ASIS) and the patella (31 subjects), and the other one located 12 cm distal to the ASIS (24 subjects). Recordings were performed at Cz' (2 cm behind Cz)-Fz.
  
  
  RESULTS
  Reproducible SEPs were obtained in all but one of the 31 subjects to ASIS-patella midpoint (mean P1 latency: 33.2+/-3.5 ms, mean side-to-side difference: 2.0+/-1.6 ms) and in all but three of the 24 subjects to stimulation 12 cm distal to the ASIS (mean P1 latency: 30.9+/-3.3 ms, mean side-to-side difference: 2.2+/-1.7 ms).
  
  
  CONCLUSIONS
  Reliable SEPs can be obtained to LFCN stimulation. It is easier and, therefore, more convenient to stimulate the ASIS-patella midpoint.
authors.affiliation: Institute of Neurological Sciences, Marmara University, Istanbul, Turkey. g.b.oflazoglu@superonline.com
authors.forename: Buket
authors.initials: B
authors.lastname: Oflazoğlu
authors.forename: Neşe
authors.initials: N
authors.lastname: Erdoğan
authors.forename: Göksel
authors.initials: G
authors.lastname: Somay
authors.forename: Onder
authors.initials: O
authors.lastname: Us
mesh_terms: D000293:Adolescent; D000328:Adult; D005073:Evoked Potentials, Somatosensory; D005267:Femoral Nerve / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D012016:Reference Values; D012867:Skin / Q000294:innervation*