We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Radial motion bias in macaque frontal eye field.
- Authors
QUAN XIAO; ANDREI BARBORICA; VINCENT P. FERRERA
- Abstract
The visual responsiveness and spatial tuning of frontal eye field (FEF) neurons were determined using a delayed memory saccade task. Neurons with visual responses were then tested for direction selectivity using moving random dot patterns centered in the visual receptive field. The preferred axis of motion showed a significant tendency to be aligned with the receptive-field location so as to favor motion toward or away from the center of gaze. Centrifugal (outward) motion was preferred over centripetal motion. Motion-sensitive neurons in FEF thus appear to have a direction bias at the population level. This bias may facilitate the detection or discrimination of expanding optic flow patterns. The direction bias is similar to that seen in visual area MT and in posterior parietal cortex, from which FEF receives afferent projections. The outward motion bias may explain asymmetries in saccades made to moving targets. A representation of optic flow in FEF might be useful for planning eye movements during navigation.
- Publication
Visual Neuroscience, 2006, Vol 23, Issue 1, p49
- ISSN
0952-5238
- Publication type
Article
- DOI
10.1017/s0952523806231055