[The characteristics of the formation of spontaneous neuronal activity in the trigeminal sensory nuclei of surviving slices of rat brain stem in postnatal ontogeny].
An attempt was made to characterize the development of neurones of sensory trigeminal nuclei--basic structure of sensory provision of alimentary behaviour at late stages of postnatal ontogenesis. The method of the brain-stem slices of rat pups [correction of ratlings] aged 2.4 and 8 weeks was applied. An increase with the age was shown of the number of neurones with spontaneous activity (44%-2 weeks; 69%-8 weeks), growth of discharges frequency, appearance of cells population with high-frequency spontaneous activity by the fourth week and an increase of such neurones number by the eighth week. Three types of background-active neurones were singled out: episodic, continuous and group; the dynamics of correlations change of these types with the age was shown. No significant changes of rest potential with the age were found, though there was a tendency to its increase between the 2-nd and 8-th weeks of postnatal development.
Lushchekin
V S
VS
Lushchekina
E A
EA
Shuleĭkina
K V
KV
D000375:Aging / Q000502:physiology*; D000818:Animals; D005260:Female; D066298:In Vitro Techniques; D008297:Male; D008564:Membrane Potentials / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D010477:Perfusion / Q000379:methods; D051381:Rats; D014278:Trigeminal Nuclei / Q000502:physiology*
Osobennosti stanovleniia spontannoĭ aktivnosti neĭronov trigeminal'nykh sensornykh iader perezhivaiushchikh srezov stvola mozga krysy v postnatal'nom ontogeneze.