Ectopic discharges and adrenergic sensitivity of sensory neurons after spinal nerve injury

Xianzeng Liu, Kyungsoon Chung, Jin Mo Chung

Research output: Contribution to journalArticle

56 Scopus citations


At various times after spinal nerve injury, dorsal root ganglia (DRGs) from injured segments were removed with attached dorsal roots and spinal nerves. In an in vitro recording chamber, spontaneously active units were recorded from teased dorsal root fascicles. Sustained spontaneous activity could first be recorded at 13 h after the ligation, but adrenergic sensitivity did not develop until 24 h after the injury. Almost all recorded activity originated from the DRG. Thus, the DRG is the most common site for ectopic discharge generation after spinal nerve injury and separate mechanisms seem to be involved in the development of ectopic discharges and adrenergic sensitivity. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)244-247
Number of pages4
JournalBrain Research
Issue number1-2
StatePublished - Dec 4 1999



  • DRG
  • Neuropathic pain
  • Spontaneous activity

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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