Fig. 7.

A, Synaptic weights of all the Ex units onto the five output units from the simulations shown in Figure6. Ex units are ordered according to which Output unit their strongest synapse is on, and then subordered by ascending synaptic strength.B, Interval tuning curves of the same Ex units shown inA. Interval tuning curves are made by counting the number of spikes in response to the second pulse at each interval and normalizing to the maximal response. All the units with preferred responses that were not to the first pulse are shown. Note a significant number of Ex units tuned to short intervals and broader tuning to longer intervals. The strategy of the output units was to receive strong excitatory input from the Ex units that respond selectively to the target interval and to receive strong inhibition from the units that responded to intervals shorter than the target interval.