[The effect of stimulation of the substantia nigra on the low- and high-threshold neuronal responses of the reticular formation].
Modulation of somatosensory responses of bulbar (n. reticularis gigantocellularis) and pontine (n. reticularis pontis caudalis) reticular neurons by the substantia nigra (SN) stimulation was studied in cats under light chloralose anesthesia. It was found that the action of the SN stimulation on the somatosensory activity of the neurons was based on the principle of the inhibitory control of their high-threshold synaptic somatosensory inputs; high-threshold neuronal responses were much more depressed than the low-threshold ones in most (71%) of the studied reticular units. Possible neuromodulatory mechanisms and functional significance of described influences are discussed.
Karpukhina
M V
MV
Gokin
A P
AP
Limanskiĭ
Iu P
IuP
D000818:Animals; D002415:Cats; D004558:Electric Stimulation / Q000379:methods; D008839:Microelectrodes; D009474:Neurons / Q000502:physiology*; D012154:Reticular Formation / Q000502:physiology*; D012684:Sensory Thresholds / Q000502:physiology; D013378:Substantia Nigra / Q000502:physiology*; D013997:Time Factors
Vliianie stimuliatsii chernoĭ substantsii na nizko- i vysokoporogovye otvety neĭronov retikuliarnoĭ formatsii.