[Modulation of the neuronal activity and evoked potentials of the cerebral cortex by stimulation of the dorsal hippocampus].
In experiments on alert rabbits high frequency stimulation of the CA1 field of the dorsal hippocampus reduced the peak latency of the main negative component of the evoked potential (EP) to a light flash in the sensorimotor and occipital tests areas of the cerebral cortex. A single stimulation of the same part of the hippocampus resulted in a gradually developing facilitation of secondary negativity of the EP 5th component, predominantly in the sensorimotor cortex. Investigation of neuronal responses in the same cortical areas to a stimulation of the CA1 field with different parameters has shown that the effects of EP modulation are due to dynamic reorganizations of cortical neuronal activity.
D000818:Animals; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D005071:Evoked Potentials; D006624:Hippocampus / Q000502:physiology*; D009044:Motor Cortex / Q000502:physiology; D009434:Neural Pathways; D011817:Rabbits; D013003:Somatosensory Cortex / Q000502:physiology; D014793:Visual Cortex / Q000502:physiology; D014796:Visual Perception / Q000502:physiology
Moduliatsiia neĭronnoĭ aktivnosti i vyzvannykh potentsialov kory bol'shikh polushariĭ razdrazheniem dorzal'nogo gippokampa