Neurophysiological foundations of sleep, arousal, awareness and consciousness phenomena. Part 2.
Second section of the paper contains description of hypothalamic centres involved in regulation of circadian rhythms. Connections between these neurons and activating reticular system are described. Transition from arousal to sleep, promoted by substances called somnogens, is discussed. Lastly, function of suprachiasmatic nucleus as circadian oscillator is presented.
Department of Anaesthesiology and Intensive Therapy, Regional Hospital in Kalisz, Poland. iwanczuk.waldemar@gazeta.pl.
Waldemar
W
Iwańczuk
Piotr
P
Guźniczak
D001143:Arousal / Q000502:physiology*; D001364:Awareness / Q000502:physiology*; D001921:Brain / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology; D003243:Consciousness / Q000502:physiology*; D006801:Humans; D007031:Hypothalamus / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D013493:Suprachiasmatic Nucleus / Q000502:physiology