The influence of gap junctions between Golgi cells (GoCs) on the responses of the network in the feedback loop configuration with weak PF inputs and mossy fiber (MF) input at 5 Hz. (A) Feedback loop configuration: network with weak PF inputs and synaptic weight reduced to 10%. (B) Raster plot (top panel) and population spike timing histogram (PSTH) (bottom panel) of the GoC layer with (red) and without (blue) gap junctions. Each dot in the raster plot is a spike. MF mean firing rate (MFR) inputs at 5 Hz were turned on at the instant of 1000 ms. (C) Same as (B) but for the GC layer.