Figure 7 .

Analysis of the onset latency for light-evoked postsynaptic currents indicates all measured responses contain a monosynaptic component. Box and whisker plots showing the median, as well as the minimum and maximum values of the response onset latency following stimulation of MD or vHPC inputs at 8 or 20 Hz for all cells analyzed in this paper. Note, the onset latencies for all responses of cells included in this analysis fall below the threshold for monosynaptic transmission defined as less than two standard deviations from the mean of the TTX + 4-AP condition (17.7 ms, dotted line).