Document Detail


Effects of aging on Laser Evoked Potentials.
MedLine Citation:
PMID:  25212497     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Introduction: Aging has been reported to reduce the amplitude of laser evoked potentials. However, it is unknown whether this effect depends on the length of the sensory fibers. This is an important issue, since most painful neuropathies are length-dependant. Methods: We conducted a study of 40 healthy subjects, half of whom were older than age 50 years. Nociceptive stimuli were delivered to the feet and thighs using a CO2 laser stimulator. Results: Detection and pain perception thresholds did not correlate with age. Latencies of N1, N2, and P2 correlated positively with age on the feet but not on the thighs, whereas the amplitude of N2P2 decreased with age for both areas. Discussion: The effects of aging on latencies may reflect a distal loss of peripheral inputs and a length-dependent de-synchronization of the ascending nociceptive volley. Additional changes in peripheral and central processes may explain the diffuse decrease of N2P2 amplitudes observed with aging. © 2014 Wiley Periodicals, Inc.
Authors:
Christelle Créac'h; Alexandre Bertholon; Philippe Convers; Luis Garcia-Larrea; Roland Peyron
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-11
Journal Detail:
Title:  Muscle & nerve     Volume:  -     ISSN:  1097-4598     ISO Abbreviation:  Muscle Nerve     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7803146     Medline TA:  Muscle Nerve     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Wiley Periodicals, Inc., a Wiley company.
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