Figure 2.
TG neurons are divided into SAlt (red), SAht (green), and RA (blue) types. A, Responses of the three types of neurons to step stimuli. B, Dependence of firing rates on whisker deflection velocity in the three neuronal types (stimuli in inset). C, Direction selectivity as measured by the neurons' responses to preferred and null step whisker deflections (stimuli in inset). D, Dependence of latency to first spike on whisker deflection velocity in the three neuronal types. E, Differentiation between SAlt and SAht according to firing rate at the lowest stimulus velocity (170°/s).