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\subsection{Variability of neurons}  \begin{enumerate}  \item Softky, W. R., & Koch, C. (1993). The highly irregular firing of cortical cells is inconsistent with temporal integration of random EPSPs. The Journal of Neuroscience, 13(1), 334-350. 
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\item van Vreeswijk, Carl, and Haim Sompolinsky. "Chaos in neuronal networks with balanced excitatory and inhibitory activity." Science 274.5293 (1996): 1724-1726.  \end{enumerate}  \section{Statistical approach to Neuroscience}