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. 2020 Feb 25;10:2590. doi: 10.1038/s41598-020-58831-9

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© The Author(s) 2020

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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AB_syn plasticity in geographically distributed hybrid circuit. (a) Activity pattern of the pacemaker artificial neuron AN_pre. Firing frequency is modulated in four phases, targeting the induction of plasticity as per the sequence: none/LTP/none/LTD, using the chosen plasticity rule. (b) BN firing response to AB_syn inputs. After LTP induction, the origianl 10 Hz pacemaker stimulation becomes capable of eliciting BN action potentials, thus reflecting the increase of postsynaptic potential amplitudes to above therhold. Firing persists until the commencement of the depotentiation/depression phase. (c) MR2 weight evolution. Data points denote resistance values for the intended LTP (red), LTD (blue) or no polarity change (black) phases. The right vertical axis indicates the correpsonding weight. X-axis common to all panels.