Fig. 4.

Statistical comparison of repetition-induced response differences using Poisson spike train analysis (see materials and methods). Each single unit is represented by a dot in a scatter plot where the median spiking response to the first presentation (P₁) is compared with that of the fourth (P₄). Magenta asterisks denote number of units showing significant response suppression in each compartment. Cyan asterisks denote the number of single units with significant response facilitation. Spk/s, spikes/s.