Sparse coding:

BA Olshausen, DJ Field, Emergence of simple-cell receptive field properties by learning a sparse code for natural images. Nature 381 (6583), 607

BA Olshausen, DJ Field, Sparse coding with an overcomplete basis set: A strategy employed by V1?,  Vision research 37 (23), 3311-3325

Peter A. Appleby and  Laurenz Wiskott, Additive neurogenesis as a strategy for avoiding interference in a sparsely-coding dentate gyrus. Network: Computation in Neural Systems, September 2009; 20(3): 137–161

Amar Sahay et al. Increasing adult hippocampal neurogenesis is sufficient to improve pattern separation