Fig. 6

Ipc inactivation effects on Imc neurons with overlapping receptive fields; A, Midbrain circuit diagram: red arrows denote excitatory projections, gray arrows inhibitory connections; B, Receptive field mapping: upper/lower panels show Imc/Ipc neuron receptive field locations on visual display; C, Raster plots of an exemplar Imc neuron under three conditions (left to right): pre-inactivation baseline, Ipc saline injection, and Ipc lidocaine administration. Stimulus duration (500 ms) marked by gray shading; D, E, F, Quantitative metrics for exemplar neurons: response intensity (D), persistence intensity (E), and persistence duration (F). Data points colored black (baseline), green (saline), red (lidocaine); G, H, I, Population-level comparisons: lidocaine-induced reductions in response intensity (G, p < 0.001), persistence intensity (H, p < 0.001), and persistence duration (I, p < 0.001) versus saline controls (Wilcoxon signed-rank tests).