[Evoked potentials in the guinea pig midbrain reticular formation in response to light flashes].

Spatial distribution of the visual evoked potentials in the midbrain reticular formation of the guinea pig in response to flashes revealed polyphasic primarily positive evoked potentials with shorter latency than in visual cortex. The area with maximum amplitude of evoked potentials was found in rostro-medial and middle part of the dorsal midbrain reticular formation.