Topography of visuomotor parameters in the frontal and premotor eye fields

Helen E Savaki, Georgia G Gregoriou, Sophia Bakola, Adonis K Moschovakis

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Abstract

To determine whether the periarcuate frontal cortex spatially encodes visual and oculomotor parameters, we trained monkeys to repeatedly execute saccades of the same amplitude and direction toward visual targets and we obtained quantitative images of the distribution of metabolic activity in 2D flattened reconstructions of the arcuate sulcus (As) and prearcuate convexity. We found two topographic maps of contraversive saccades to visual targets, separated by a region representing the vertical meridian: the first region straddled the fundus of the As and occupied areas 44 and 6-ventral, whereas the second one occupied areas 8A and 45 in the anterior bank of the As and the prearcuate convexity. The representation of the vertical meridian runs along the posterior borders of areas 8A and 45 (deep in the As). In both maps, the upper part of visuo-oculo motor space is represented ventrally and laterally and the lower part dorsally and medially whereas dorsal and ventral regions are separated by the representation of the horizontal meridian.

Original languageEnglish
Pages (from-to)3095-3106
Number of pages12
JournalCerebral Cortex
Volume25
Issue number9
DOIs
Publication statusPublished - Sep 2015
Externally publishedYes

Keywords

  • Areas 6v 8a 44 45
  • FEF
  • Premotor cortex
  • Visually guided saccades
  • Visuo-oculomotor space

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