Quantification of the area (expressed as % of section area) covered by Y39-1 in coronal brain sections after exposure to 20, 40 or 80 Hz light flickering; analysis was performed in five sections per animal ( n = 6–8 mice/group, mean ± SEM in the bar graphs, ** P < 0.01, ns, not significant, one-way ANOVA with Tukeys multiple comparison test).
