title: [The method of monitoring sleep state and respiratory rhythm in freely moving rats].
abstract: OBJECTIVE
  To devise a new method for testing the animal model of sleep apnea syndrome (SAS).
  
  
  METHODS
  We simultaneously monitoring the respiratory wave through a micro-pressure transducer and the electrical signals of both electrocorticogram (ECoG) and electromyogram (EMG), for detecting the sleep-wake states and the respiratory rhythm in rats. The recording data are analyzed by the manual-computer work.
  
  
  RESULTS
  The ECoG and EMG signals are stable and easily to distinguish. We can accurately detect the sleep-wake state and the sleep apnea events in rats by these signals.
  
  
  CONCLUSIONS
  The method is reliable to test the small animal model of SAS, and is easily to operate.
authors.affiliation: Teaching and Research Section of Pathophysiology, Hebei Medical University, Shijiazhuang 050017, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Guang-fa
authors.initials: GF
authors.lastname: Wang
authors.forename: Yi-ling
authors.initials: YL
authors.lastname: Ling
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology; D004569:Electroencephalography / Q000379:methods; D008991:Monitoring, Physiologic / Q000379:methods*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012119:Respiration; D012143:Respiratory Physiological Phenomena; D012890:Sleep / Q000502:physiology*