Figure 7.

Synaptic impact generated by single LGNd axons during sustained visual responding. A, The poststimulus time histogram of a sustained LGNd neuron after the presentation of a luminous spot covering the receptive field center for 1 s (517 repetitions; total spike count, 34,178). B, Spikes from the last 0.5 s of the presentation were selected (mean preceding interval, 25 ms) and used to generate the spike-triggered CSD. C, D, Spike-triggered CSDs generated from spontaneous spikes with a preceding interspike interval of >200 ms (C) or between 16 and 49 ms (D). The latter values were selected to match the interspike intervals generated during the sustained visual response.