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The Analysis of Complex Motion Patterns by Form/Cue Invariant MSTd Neurons

Summary: The Analysis of Complex Motion Patterns by Form/Cue Invariant
MSTd Neurons
Bard J. Geesaman1 and Richard A. Andersen2
1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge,
Massachusetts 02139, and 2Division of Biology 216-76, California Institute of Technology, Pasadena, California 91125
Several groups have proposed that area MSTd of the macaque
monkey has a role in processing optical flow information used
in the analysis of self motion, based on its neurons' selectivity
for large-field motion patterns such as expansion, contraction,
and rotation. It has also been suggested that this cortical region
may be important in analyzing the complex motions of objects.
More generally, MSTd could be involved in the generic function
of complex motion pattern representation, with its cells respon-
sible for integrating local motion signals sent forward from area
MT into a more unified representation. If MSTd is extracting
generic motion pattern signals, it would be important that the
preferred tuning of MSTd neurons not depend on the particular
features and cues that allow these motions to be represented.
To test this idea, we examined the diversity of stimulus features
and cues over which MSTd cells can extract information about


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


Collections: Biology and Medicine