Serial linkage of target selection for orienting and tracking eye movements.

Published

Journal Article

Many natural actions require the coordination of two different kinds of movements. How are targets chosen under these circumstances: do central commands instruct different movement systems in parallel, or does the execution of one movement activate a serial chain that automatically chooses targets for the other movement? We examined a natural eye tracking action that consists of orienting saccades and tracking smooth pursuit eye movements, and found strong physiological evidence for a serial strategy. Monkeys chose freely between two identical spots that appeared at different sites in the visual field and moved in orthogonal directions. If a saccade was evoked to one of the moving targets by microstimulation in either the frontal eye field (FEF) or the superior colliculus (SC), then the same target was automatically chosen for pursuit. Our results imply that the neural signals responsible for saccade execution can also act as an internal command of target choice for other movement systems.

Full Text

Duke Authors

Cited Authors

  • Gardner, JL; Lisberger, SG

Published Date

  • September 2002

Published In

Volume / Issue

  • 5 / 9

Start / End Page

  • 892 - 899

PubMed ID

  • 12145637

Pubmed Central ID

  • 12145637

International Standard Serial Number (ISSN)

  • 1097-6256

Digital Object Identifier (DOI)

  • 10.1038/nn897

Language

  • eng

Conference Location

  • United States