| Lateral inhibition should be strong, fast, and sharp | In addition, we assumed that the synaptic connections from Background-neurons to output neurons are fixed because they showed little weight change in the simulation (orange lines in Fig 2B). |
| P P ji) : vSGf(W;§)Zqiuqlu7 : VSG§(WJ§)ZquqZfl7 “=1 M=1 < 1-,.) 2[ dsF<w;§,s>[ drax<r>[ dt'¢<t'>¢<t' — (r — s + 2%)), —oo 0 max(0,r—s+2dXd) < 1,) 2[ dsF<w;§,s>[0 dram 0 dqay<q>[0 dr'am | In the diagram, blue wavy lines represent intrinsic correlation, and arrows are synaptic connections . |
| STDP in E-to-I and I-to-E connections | In our model, although inhibitory neurons are not directly projected from input sources, as excitatory neurons learn a specific input source (Fig 5D, left panel), inhibitory neurons acquire feature selectivity through Hebbian STDP at synaptic connections from those excitatory neurons (Fig 5D, middle panel). |