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. 2017 Oct 24;8:1116. doi: 10.1038/s41467-017-01109-y

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Cerebellar input layer sparsens and expands input activity patterns. a Normalized population sparseness (granule cell sparseness/mossy fiber sparseness) for independent mossy fiber (MF) activity patterns (left) and correlated MF inputs (right, σ = 20 μm). b Top: Median normalized population sparseness for sparse (solid line, N_syn = 4) and dense (dashed line, N_syn = 16) synaptic connectivities, plotted against correlation radius. Bottom: Robustness of population sparsening for different correlation radii. c, d Same as a, b plotted for normalized total variance