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. 2014 Sep 12;8:112. doi: 10.3389/fncir.2014.00112

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Copyright © 2014 DeBello, McBride, Nichols, Pannoni, Sanculi and Totten.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Framework for the quantitative analysis of between-branch selectivity and within-branch clustering. (A) Distribution of 40 synapses across a population of 10 dendrites with random (open bars/symbols) or selective targeting (gray bars/symbols). Synapses were assigned to dendrites by independently sampling from evenly distributed noise (random) or a Gaussian distribution with SD = 4 (selective). Examples of outcomes are shown below for populations with dendrite-to-dendrite variance = 2 or 10. Symbols represent synapses for each of 10 dendrites, d1–d10. (B) Distribution of 4 synapses across a single dendrite with random (open bars/symbols) or selective targeting (gray bars/symbols) of dendritic address. Synapses were assigned to an address by independently sampling from evenly distributed noise (random) or a Gaussian distribution with SD = 10 (selective). Intersynapse distance (ISD) was measured along the dendritic path, yielding three ISDs per dendrite (total of 3000 ISDs). Example of outcomes are shown below for dendrites with mean ISD = 30 or 5. Symbols represent dendritic address.