1. Chronometry of visual responses in frontal eye field, supplementary eye field, and anterior cingulate cortex
- Author
-
Jeffrey D. Schall, Erik E. Emeric, Pierre Pouget, Veit Stuphorn, and Kate Reis
- Subjects
Supplementary eye field ,Male ,genetic structures ,Eye Movements ,Physiology ,Action Potentials ,Macaque ,Gyrus Cinguli ,Visual processing ,biology.animal ,Reaction Time ,Medicine ,Animals ,Visual Pathways ,Latency (engineering) ,Anterior cingulate cortex ,Visual Cortex ,Analysis of Variance ,Brain Mapping ,biology ,business.industry ,General Neuroscience ,Visually guided ,Macaca mulatta ,eye diseases ,medicine.anatomical_structure ,Frontal lobe ,Visual Fields ,business ,Neuroscience ,Photic Stimulation ,Chronometry - Abstract
The latency and variability of latency of single-unit responses to identical visual stimulation were measured in the frontal eye field (FEF), supplementary eye field (SEF), and anterior cingulate cortex (ACC) of macaque monkeys performing visually guided saccades. The mean visual response latency was significantly shorter in FEF (64 ms) than in SEF (81 ms) or ACC (100 ms), and latency values determined by four methods agreed. The latency variability of the visual response was respectively less in FEF (21 ms) than in SEF (37 ms) or ACC (41 ms). Latency, variability of latency, and magnitude of the visual responses were correlated within FEF and SEF but not ACC. These characteristics of the visual response are consistent with the degree of convergence of visual afferents to these areas and constrain hypotheses about visual processing in the frontal lobe.
- Published
- 2005