Spectral analyses of PGO-on neurons during paradoxical sleep in freely moving cats.
We have investigated the power spectral density (PSD) characteristics of spontaneous neuronal activities during paradoxical sleep (PS), including phasically firing PGO-on and tonically discharging type I-R neurons in the pontine tegmentum. The PSD of lateral geniculate PGO waves and blood pressure (BP) were also examined. During PS, the PSD of PGO-on neurons and PGO waves showed an almost white noise-like pattern, while that of TI-R neurons and BP exhibited a 1/f spectrum. It appears, therefore, that the neuronal and autonomic slow fluctuations found in the 1/f spectrum during PS are not driven by the PGO wave system.
Sei
H
H
Département de Médecine Expérimentale, Université Claude Bernard, Lyon, France.
Sakai
K
K
Yamamoto
M
M
Jouvet
M
M
D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D002415:Cats; D004569:Electroencephalography; D005583:Fourier Analysis; D005829:Geniculate Bodies / Q000166:cytology / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D009778:Occipital Lobe / Q000166:cytology / Q000502:physiology*; D011149:Pons / Q000166:cytology / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology*