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A Neural Representation of Sequential States Within an Instructed Task Michael Campos, Boris Breznen, and Richard A. Andersen
 

Summary: A Neural Representation of Sequential States Within an Instructed Task
Michael Campos, Boris Breznen, and Richard A. Andersen
Computation and Neural Systems, Division of Biology, California Institute of Technology, Pasadena, California
Submitted 21 December 2009; accepted in final form 22 August 2010
Campos M, Breznen B, Andersen RA. A neural representation of sequen-
tial states within an instructed task. J Neurophysiol 104: 28312849, 2010.
First published August 25, 2010; doi:10.1152/jn.01124.2009. In the study of
the neural basis of sensorimotor transformations, it has become clear
that the brain does not always wait to sense external events and
afterward select the appropriate responses. If there are predictable
regularities in the environment, the brain begins to anticipate the
timing of instructional cues and the signals to execute a response,
revealing an internal representation of the sequential behavioral states
of the task being performed. To investigate neural mechanisms that
could represent the sequential states of a task, we recorded neural
activity from two oculomotor structures implicated in behavioral
timing--the supplementary eye fields (SEF) and the lateral intrapari-
etal area (LIP)--while rhesus monkeys performed a memory-guided
saccade task. The neurons of the SEF were found to collectively
encode the progression of the task with individual neurons predicting

  

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

 

Collections: Biology and Medicine