Fig. 5
From: Inhibitory microcircuits for top-down plasticity of sensory representations
Translation invariance of learned representations. a Illustration: Two excitatory networks with different visual receptive field locations (white circles) share the same interneuron network. The interneurons are broadly tuned, and receive input from both visual field locations. Only one visual field location is rewarded during the rewarded phase (rewarded location). b Evolution of excitatory weights for the rewarded location. c Final excitatory weights for the rewarded location 1. d Tuning curves of excitatory populations with a receptive field at the rewarded location at the beginning (before) and at the end of the simulation (after the refinement phase; measured as the number of spikes during 50 ms after stimulus onset averaged over all occurrences of that stimulus in 1 s of simulation). e Evolution of inhibitory synaptic weights. f Final inhibitory weights. g PV tuning at the beginning and after the refinement phase. h Evolution of excitatory weights for the non-rewarded location. i Final excitatory weights for the non-rewarded population. j Tuning curves of excitatory populations with a receptive field at the non-rewarded location (as in d)
