title: [The relation between amygdaloid nucleus in rats and pain modulation].
abstract: OBJECTIVE
  To research the influence of noxious stimuli on the electric activities of pain-related neurons in several subnuclei of Amygdaloid Nucleus in rats.
  
  
  METHODS
  Trains of the electric impulses applied to the sciatic nerve were used as noxious stimuli. The discharges of neurons were channeled off by glass microelectrode.
  
  
  RESULTS
  Pain-related neurons existed in several subnuclei of Amygdaloid Nucleus. When the noxious stimuli were administered the frequency of discharges of pain-excited neurons (PEN) was increased while the frequency of pain-inhibited neurons (PIN) was decreased to the lowest level. The electric activities of PEN and PIN were matched with each other. Intraperitoneal injection of morphine (10 mg/kg) antagonized the effects of noxious stimuli on the pain-related neurons.
  
  
  CONCLUSIONS
  Several subnuclei of Amygdaloid Nucleus play an essential role in perceiving, integrating and transmitting the pain impulses. They are a part of the central nervous system in which pain information is controlled and managed.
authors.affiliation: Department of Physiology, Harbin Medical University, Harbin 150086, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Lv
authors.forename: Ming-Zhi
authors.initials: MZ
authors.lastname: Sun
authors.forename: Man-Ying
authors.initials: MY
authors.lastname: Xu
authors.forename: Ji-Ye
authors.initials: JY
authors.lastname: Zhang
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Cui
mesh_terms: D000679:Amygdala / Q000502:physiology*; D000818:Animals; D004594:Electrophysiology; D009474:Neurons / Q000502:physiology; D009619:Nociceptors / Q000502:physiology*; D051381:Rats; D017208:Rats, Wistar