Saccadic and Fixation Systems of Oculomotor Control in Monkey Superior Colliculus

  • Robert H. Wurtz
  • Douglas P. Munoz
Conference paper
Part of the Research Notes in Neural Computing book series (NEURALCOMPUTING, volume 4)


Saccadic eye movements and the intervening periods of visual fixation represent one of the simplest behavioral systems that have been studied in the primate. The Superior Colliculus (SC) is a key structure in both systems, but only one step in a control system extending from cerebral cortex to the pons. Recent experiments on the saccadic system have shown that a modified feedback system controlling the position of the eyes can explain key aspects of the initiation of saccades by the SC. Identification of a fixation zone within the anterior colliculus Ims emphasized the importance of active fixation. Initial studies of the interaction between these two systems are consistent with the idea that one inhibits the other, and further experiments may provide a model for the study of the interactions between systems.


Superior Colliculus Saccade Latency Saccadic Amplitude Express Saccade Spike Density 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Robert H. Wurtz
    • 1
  • Douglas P. Munoz
    • 1
  1. 1.Laboratory of Sensorimotor ResearchNational Eye InstituteBethesdaUSA

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