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Area MSTd Neurons Encode Visual Stimuli in Eye Coordinates During Fixation and Pursuit
 

Summary: Area MSTd Neurons Encode Visual Stimuli in Eye Coordinates During
Fixation and Pursuit
Brian Lee, Bijan Pesaran, and Richard A. Andersen
Division of Biology, California Institute of Technology, Pasadena, California
Submitted 8 June 2009; accepted in final form 21 October 2010
Lee B, Pesaran B, Andersen RA. Area MSTd neurons encode
visual stimuli in eye coordinates during fixation and pursuit. J
Neurophysiol 105: 6068, 2011. First published October 27, 2010;
doi:10.1152/jn.00495.2009. Visual signals generated by self-motion
are initially represented in retinal coordinates in the early parts of the
visual system. Because this information can be used by an observer to
navigate through the environment, it must be transformed into body or
world coordinates at later stations of the visual-motor pathway.
Neurons in the dorsal aspect of the medial superior temporal area
(MSTd) are tuned to the focus of expansion (FOE) of the visual
image. We performed experiments to determine whether focus tuning
curves in area MSTd are represented in eye coordinates or in screen
coordinates (which could be head, body, or world-centered in the
head-fixed paradigm used). Because MSTd neurons adjust their FOE
tuning curves during pursuit eye movements to compensate for

  

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

 

Collections: Biology and Medicine