[Photically released trains of potentials following local application of ethosuximide into the corpus geniculatum laterale].

The influence of ethosuximide injected into the lateral geniculate body (LGB) on photically evoked afterdischarges (PhAD) and recruiting responses (PhR) after 0,3/s or 7/s light flash series was compared with the effect of intraperitoneally administered ethosuximide in freely moving albino rats with chronic electrodes. Whereas i. p. application of ethosuximide reduces or abolishes photically evoked afterdischarges and recruiting, administration into the LGB does not change these potentials or the photic evoked potential. This points to an action not immediately in the LGB.