Figure 4-.

The enhancing effects of PF-3628 on delay-related firing at the population level. Top panel A shows population spike density functions for the average of 15 Delay cells, showing firing for their preferred vs. their non-preferred directions under control conditions (blue) and following iontophoresis of PF-3628 conditions (green). B: Statistical analysis showed that PF-3628 application significantly increased neuronal firing during the delay epoch for both the neurons’ preferred and the non-preferred direction, with higher increase for the preferred direction. C: Iontophoresis of PF-3628 significantly enhanced the spatial tuning of Delay cells by increasing d’.