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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Curr Opin Neurobiol. 2011 Jun 30;21(5):701–708. doi: 10.1016/j.conb.2011.06.003

Figure 1.

Figure 1

Circuits with strong feedforward inhibition (FFI) can selectively gate synchronous over asynchronous inputs. (a) Minimal FFI circuit. (b,c) Integration in circuits without FFI and (d,e) with FFI. Shown are the time courses of input population activity (gray) and, for a single post-synaptic excitatory neuron, the total excitatory conductance received (Gexc, red), total inhibitory conductance (Ginh, blue), and spikes output (black). Spike responses are shown for ten consecutive trials whereas conductances are for a single trial. In both the absence and presence of inhibition synchronous input drives post-synaptic output (b,d), but asynchronous inputs do not produce spiking output in the FFI circuit (e). Adapted from [8] with permission from Springer.