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Functional, but not anatomical separation of "what" and "when" in prefrontal cortex
 

Summary: Functional, but not anatomical separation of
"what" and "when" in prefrontal cortex
Supplementary material
Christian K. Machens, Ranulfo Romo, and Carlos D. Brody
September 7, 2009
Contents
1 Notation 2
2 Principal component analysis 3
3 Determining the noise floor 4
4 Difference-of-Covariances (DOC) method:
Separating time and frequency 8
4.1 DOC method in n = 6 dimensions. . . . . . . . . . . . . . . . . . . . . . 8
4.2 DOC method in n > 6 dimensions. . . . . . . . . . . . . . . . . . . . . . 13
4.3 A counter example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Estimating the parameters of the linear network model 15
1
1 Notation
· averaging over both time t and frequency f
A mixing or transition matrix of the subspace dynamics
b external inputs for subspace dynamics

  

Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra
Machens, Christian - Group for Neural Theory, École Normale Supérieure, Paris

 

Collections: Biology and Medicine; Computer Technologies and Information Sciences