Abstract:
STUDY DESIGN:Changes in the electrophysiologic response of spinal dorsal horn neurons elicited by peripheral electrical stimulation were examined. OBJECTIVE:To investigate whether the electrical stimulation of peripheral nerves causes an inhibition of pain at the spinal cord level. SUMMARY OF BACKGROUND DATA:The wide dynamic range neurons studied were known to be excited by primary afferent fibers, not only combined A (delta) and C nociceptive fibers, but also low-threshold mechanoreceptive A (beta) fibers and A (delta) fibers of down hairs. The wide dynamic range neurons are classified as nociceptive neurons. METHODS:Responses of wide dynamic range neurons in the lumbosacral dorsal horn to input from C fibers were studied in urethane chloralose-anesthetized cats. The posterior tibial nerve and sciatic nerve were stimulated simultaneously to examine the effect on the C fiber responses elicited by superficial peroneal nerve stimulation. RESULTS:Simultaneous stimulation of the posterior tibial nerve and sciatic nerve was performed with superficial peroneal nerve C fiber stimulation. CONCLUSIONS:This study demonstrated that electrical stimulation of peripheral nerves leads to inhibitory input to the pain pathways at the spinal cord level.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Hanai Fdoi
10.1097/00007632-200008010-00005keywords:
subject
Has Abstractpub_date
2000-08-01 00:00:00pages
1886-92issue
15eissn
0362-2436issn
1528-1159journal_volume
25pub_type
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