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Separate Representations of Target and Timing Cue Locations in the Supplementary Eye Fields
 

Summary: Separate Representations of Target and Timing Cue Locations
in the Supplementary Eye Fields
Michael Campos, Boris Breznen, and Richard A. Andersen
Computation and Neural Systems, Division of Biology, California Institute of Technology, Pasadena, California
Submitted 23 June 2008; accepted in final form 8 November 2008
Campos M, Breznen B, Andersen RA. Separate representations of
target and timing cue locations in the supplementary eye fields. J
Neurophysiol 101: 448459, 2009. First published November 12,
2008; doi:10.1152/jn.90704.2008. When different stimuli indicate
where and when to make an eye movement, the brain areas involved
in oculomotor control must selectively plan an eye movement to the
stimulus that encodes the target position and also encode the infor-
mation available from the timing cue. This could pose a challenge to
the oculomotor system since the representation of the timing stimulus
location in one brain area might be interpreted by downstream
neurons as a competing motor plan. Evidence from diverse sources
has suggested that the supplementary eye fields (SEF) play an impor-
tant role in behavioral timing, so we recorded single-unit activity from
SEF to characterize how target and timing cues are encoded in this
region. Two monkeys performed a variant of the memory-guided

  

Source: Andersen, Richard - Division of Biology, California Institute of Technology

 

Collections: Biology and Medicine