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Supporting Information Martnez-Garca et al. 10.1073/pnas.1108137108

Summary: Supporting Information
Martķnez-Garcķa et al. 10.1073/pnas.1108137108
SI Text
Information Analysis on Medial Premotor Cortex Neurons During
Vibrotactile Decision-Making with a Postponed Response. Single-cell
information analysis. We are interested in knowing the information
carried by neuronal responses, especially how the firing rate is
related to the stimulus or to the category of the behavioral re-
sponse. To estimate the information content carried by the neu-
ron's firing rate, we performed mutual information (MI) analysis
(1, 2), which quantified the average amount of common in-
formation contained in the variables R and S--in our case, firing
rate and category of behavioral response. In other words, the MI
reflects the uncertainty removed from one by knowing the other.
The MI was calculated as
IšS; RŽ ¼
s; r
Pšs; rŽ log2
Pšs; rŽ


Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra
Rolls, Edmund T. - Department of Experimental Psychology, University of Oxford


Collections: Biology and Medicine; Computer Technologies and Information Sciences