(A) Experimental timeline of acute, viral-mediated Rem2 deletion in Rem2flx/flx mice with 2 days monocular deprivation (MD). V.I., virus injection. (B) Examples of spontaneous firing recorded in GFP+ layer 2/3 pyramidal neurons in Rem2flx/flx + AAV GFP (top left, n = 22), Rem2flx/flx + AAV GFP+2 d MD (bottom left, n = 17), Rem2flx/flx + AAV GFP-Cre (top right, n = 17), and Rem2flx/flx + AAV GFP-Cre+2 d MD (bottom right, n = 20). (C) Average firing rate measured in layer 2/3 pyramidal neurons. Data is presented as individual data points, with the horizontal bar denoting average. N = 4 animals per condition. Error bars represent S.E.M. *p<0.05, by two-way ANOVA with Tukey post-hoc.