Theoretical Considerations for the Analysis of Population Coding in Motor Cortex
Keyword(s):
Recent evidence of population coding in motor cortex has led some researchers to claim that certain variables such as hand direction or force may be coded within a Cartesian coordinate system with respect to extra personal space. These claims are based on the ability to predict the rectangular coordinates of hand movement direction using a “population vector” computed from multiple cells' firing rates. I show here that such a population vector can always be found given a very general set of assumptions. Therefore the existence of a population vector constitutes only weak support for the explicit use of a particular coordinate representation by motor cortex.
1995 ◽
Vol 73
(6)
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pp. 2563-2567
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2003 ◽
Vol 89
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pp. 1136-1142
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1988 ◽
Vol 8
(8)
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pp. 2938-2947
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2004 ◽
Vol 98
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pp. 498-506
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1999 ◽
Vol 82
(5)
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pp. 2693-2704
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2008 ◽
Vol 186
(2)
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pp. 349-353
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