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Stability of lumbosacral somatosensory evoked potentials in a long‐term follow‐up
Author(s) -
Berić Aleksandar
Publication year - 1988
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880110615
Subject(s) - lumbosacral joint , somatosensory evoked potential , somatosensory system , medicine , evoked potential , neurological disorder , audiology , anesthesia , sensory system , latency (audio) , physical medicine and rehabilitation , central nervous system disease , surgery , psychology , neuroscience , psychiatry , electrical engineering , engineering
Abstract Variability of the lumbosacral somatosensory evoked potential (LSEP) in test/retest situations was assessed in 49 patients with nonprogressive neurological disorder and 20 healthy subjects. The average time of LSEP follow‐up in the patients was 16.2 months. The first group of healthy subjects had a short test/retest period of between 2 days and 2 weeks, and the second group had a long period between tests, with a mean of 35.7 months. The R and S waves of the LSEP were analyzed separately for latency and amplitude. Test/retest differences were statistically compared. The average correlation coefficient for healthy subjects was 0.84 and for patients was 0.78. These results suggested a remarkable stability of LSEPs in both healthy subjects and patients with nonprogressive neurological disorders. Therefore, we propose that LSEPs can be used in follow‐up both to screen for initial dysfunction of the sensory system and to detect any changes in present dysfunction.