The dorsomedial frontal cortex: eye and forelimb fields.
This review yields three conclusions: first, the eye field as described using unit recording and electrical stimulation on behaving monkeys trained to fixate visual targets is much larger than the 4 mm2 area originally described. Second, the eye field and forelimb field share a similar neural space within the dorsomedial frontal cortex (DMFC); thus 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 orbit has been discovered in the DMFC; it is proposed that this topographic map records the order of positions of the eyes and forelimbs during the acquisition of visually guided movement sequences.
Tehovnik
E J
EJ
Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139, USA.
D000818:Animals; D001931:Brain Mapping; D005133:Eye Movements / Q000502:physiology*; D005403:Fixation, Ocular / Q000502:physiology; D005552:Forelimb / Q000294:innervation*; D005625:Frontal Lobe / Q000502:physiology*; D008251:Macaca; D009044:Motor Cortex / Q000502:physiology; D009434:Neural Pathways / Q000502:physiology; D009949:Orientation / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D012438:Saccades / Q000502:physiology