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(a) Two individual driving effort sub-modules responding for only positive and only negative inputs respectively.

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posted on 18.03.2015, 02:58 by Qingjiang Li, Alexander Serb, Themistoklis Prodromakis, Hui Xu

The overall drive effort variable vz equals the sum of vz+ and vz. (b) and (c) Asymmetric STDP curves attained by employing different resistance values in the two driving sub-modules and modifying bipolar threshold values (B+ = 0.31nV, B = −0.27nV) to compensate for STDP curve drift. Inset: Corresponding STDP curves with original bipolar threshold values (B+ = −B = 0.35nV).