Fig. 6. Latency measurements from the Type I cell of Fig. 3. Filled bars are latency measurements to the EPSP generated by water onset, while the open bars are latency measurements from the immediately following response to a 2-s odor pulse. The odor response latency was, in every case, at least 25% longer than that for the hydrodynamic latency but was progressively shorter as the concentration of tetramin was increased. Each bar is the mean of at least five separate measurements ± 1 S.E.M.