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. 2014 Nov 20;8:137. doi: 10.3389/fnana.2014.00137

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Copyright © 2014 Ullo, Nieus, Sona, Maccione, Berdondini and Murino.

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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Influence of time on heat propagation. The heat propagation time directly influences the estimated connectivity. (A) The input image and seed electrode. (B) The corresponding probabilistic directional feature. Higher histogram values in bins #1 and #5 reflect the structure of neurites in the patch (spreading horizontally). (C) Result of the GHK propagation at time t = 1. Electrodes are colored based on the amount of heat propagated from the seed. After time t = 1 the seed feature mainly contributes to the propagation, so electrodes 1 and 5 have warmer colors. (D–E) Results at t = 10, 25. Although the pattern of propagation partially preserves the initial layout, more contributions come from neighboring features.