[The disinhibitory influence of the activating system when artificially excited from different points in the brain].
EEG activation can be produced by electrical stimulation of some cortical points with the same threshold current strength as by the midbrain RF and thalamic CM stimulation. Near-threshold stimulation of all these points acting simultaneously with inhibitory conditioned signals does not disturb the effector inhibition but displays an EEG difference between negative signals: the fine differentiation sound evokes considerable EEG desynchronization, while the rough one does not change the background rhythms. The same stimulation combined with a positive signal which has been made ineffective by successive inhibition or extinction, reestablishes the intensive EEG activation in response to this signal and the effector conditioned reflex. Therefore a mode-rate additional stimulation of the activating points in the cortex, RF and CM has a disinhibitory influence. When initiated in the cortex this influence may be transmitted from the cortical point to other parts of the brain along transcortical and corticofugal connections.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D002540:Cerebral Cortex / Q000502:physiology*; D003214:Conditioning, Classical / Q000502:physiology*; D005108:Extinction, Psychological / Q000502:physiology; D008636:Mesencephalon / Q000502:physiology; D009433:Neural Inhibition; D012154:Reticular Formation / Q000502:physiology*; D013016:Sound; D013787:Thalamic Nuclei / Q000502:physiology*
Rastormazhivaiushchee deĭstvie aktiviruiushcheĭ sistemy pri isskusstvennom ee vozbuzhdenii s razlichnykh punktov mozga