[1] [1] A. Baddeley, "Working memory: Looking back and looking forward," Nat. Rev. Neurosci. 4, 829-839 (2003).

[2] [2] Y. Sakurai, "Rat's auditory working memory tested by continuous non-matching-to-sample performance," Psychobiology 15, 277
281 (1987).

[3] [3] Y. Sakurai, "Hippocampal and neocortical cell assemblies encode memory processes for different types of stimuli in the rat," J. Neurosci. 16, 2809-2819 (1996).

[4] [4] P. S. Goldman-Rakic, "Cellular basis of working memory," Neuron 14, 477-485 (1995).

[5] [5] J. M. Fuster, G. E. Alexander, "Neuron activity related to short-term memory," Science 173, 652-654 (1971).

[6] [6] S. Funahashi, "Neuronal mechanisms of executive control by the prefrontal cortex," Neurosci. Res. 39, 147-165 (2001).

[7] [7] E. K. Miller, "An integrative theory of prefrontal cortex," Ann. Rev. Neurosci. 24, 167-202 (2001).

[8] [8] X. J. Wang, "Synaptic reverberation underlyingmnemonic persistent activity," Trends Neurosci. 24, 455-463 (2001).

[9] [9] E. H. Baeg, Y. B. Kim, K. Huh et al., "Dynamics of population code for working memory in the prefrontal cortex," Neuron 40, 177-188 (2000).

[10] [10] B. A. Olshausen, D. J. Field, "Sparse coding of sensory inputs," Curr. Opin. Neurobiol. 14, 481-487 (2004).

[11] [11] I. E. Ohiorhenuan, F. Mechler, K. P. Purpura et al., "Sparse coding and high-order correlations in finescale cortical networks," Nature 466, 617-621 (2010).

[12] [12] S. Ganguli, H. Sompolinsky, "Compressed sensing, sparsity, and dimensionality in neuronal information processing and data analysis," Ann. Rev. Neurosci. 35, 485-508 (2012).

[13] [13] Y. Q. Li, Cichocki Andrzej, Amari Shun-Ichi. "Blind estimation of channel parameters and source components for EEG signals: A sparse factorization approach," IEEE Transact. Neuronal Netw. 17, 419-430 (2006).

[14] [14] L. A. Finelli, S. Haney, M. Bazhenov et al., "Synaptic learning rules and sparse coding in a model sensory system," PLoS Comput. Biol. 4, 1-18 (2008).

[15] [15] S. L. Michael, J. S. Terrence, "Learning overcomplete representations," Neuron. Comput. 12, 337-365 (2000).

[16] [16] G. S. Bhumbra, A. N. Inyushkin, M. Syrimi, R. E. Dybll, "Spike coding during osmotic stimulation of the rat supraoptic nucleus," J. Physiol. 569, 257-274 (2005).

[17] [17] E. T. Jaynes, Probability Theory: The Logic of Science, Cambridge University Press, Cambridge, UK (2003).

[18] [18] G. S. Bhumbra, R. E. Dyball, "Spike coding from the perspective of a neuron," Cogn. Process 6, 157-176 (2005).

[19] [19] P. O. Hoyer, "Non-negative sparse coding," in Networks for Signal Processing XII, Proc. IEEE Workshop on Neuronal Networks for Signal Processing, Martigny, Switzerland (2002).