THE DORSOMEDIAL FRONTAL-CORTEX - EYE AND FORELIMB FIELDS

This review yields three conclusions: first, the eye field as describe d using unit recording and electrical stimulation on behaving monkeys trained to fixate visual targets is much larger than the 4 mm(2) area originally described. Second, the eye field and forelimb field share a similar neural space within the dorsomedial frontal cortex (DMFC); th us the electrophysiogical studies that have been conducted on visually guided and sensory-triggered forelimb movements must be re-evaluated, since none of these studies controlled eye movement and eye position independently. Third, a topographic map representing eye position in o rbit has been discovered in the DMFC; it is proposed that this topogra phic map records the order of positions of the eyes and forelimbs duri ng the acquisition of visually guided movement sequences.