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Concurrent processing of saccades

Published online by Cambridge University Press:  01 August 1999

Robert M. McPeek ,
Edward L. Keller  and
Ken Nakayama
Robert M. McPeek
Affiliation:
Smith-Kettlewell Eye Research Institute, San Francisco, CA 94115 {rmm; elk}@ski.org
Edward L. Keller
Affiliation:
Smith-Kettlewell Eye Research Institute, San Francisco, CA 94115 {rmm; elk}@ski.org
Ken Nakayama
Affiliation:
Vision Sciences Laboratory, Department of Psychology, Harvard University, Cambridge, MA 02138 ken@wjh.harvard.edu
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Abstract

We summarize several experiments indicating that the saccadic system is capable of simultaneously programming two movements toward different goals. This concurrent processing of saccades can lead to the execution of two saccades separated by an extremely short intersaccadic interval. This supports the idea of target competition proposed in Findlay & Walker's article, but suggests a greater degree of parallel processing. We provide evidence that concurrent processing of two saccades is not limited to higher-level planning subsystems; rather, it also involves both regions close enough to the motor output that it can systematically affect saccade trajectory.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 22 , Issue 4 , August 1999 , pp. 691 - 692
Copyright
© 1999 Cambridge University Press

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