Synaptic excitation of principal cells in the cat's lateral geniculate nucleus during focal epileptic seizures in the visual cortex.

Principal cells of the lateral geniculate nucleus are intensely activated during focal seizures in the visual cortex. The intracellular recordings technique from geniculate cells was used to show that this activity is induced by a strong excitatory synaptic input from discharging cortico-geniculate neurones in layer 6 of the cortex.