[Post-tetanic potentiation of the primary response and the late negative wave in the somatosensory area of the cat brain].
A single electrical stimulus applied to the thalamic VPL nucleus or to the subcortical white matter evoked a primary response in the cat g. sigmoideus posterior followed by delayed negative wave generated in the middle layers of the cortex and not reflected on its surface. The delayed negative wave seems to reflect mainly the excitation of stellate cells. Tetanization of the VPL nucleus or the white matter evoked a sharp and long-term (several hours) potentiation of the delayed negative wave. At the same time, the changes of the primary response were not so obvious. The effect of the posttetanic potentiation, therefore, seems to be more characteristic for stellate rather than for pyramidal cells, the former being the main generators of the primary response.
Ocherashvili
Kashakashvili
R P
RP
D000818:Animals; D002415:Cats; D004558:Electric Stimulation / Q000379:methods; D004566:Electrodes; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D008839:Microelectrodes; D013003:Somatosensory Cortex / Q000502:physiology*; D013787:Thalamic Nuclei / Q000502:physiology; D013997:Time Factors
Posttetanicheskaia potentsiatsiia pervichnogo otveta i pozdneĭ otritsatel'noĭ volny v somatosensornoĭ oblasti kory mozga koshki.