DLG4 and post-traumatic stress disorder: Further results showed that in both in vitro and in vivo models, the ability of Gabra6 to bind to both Homer1 and PSD‐95 was higher in the TBI+PTSD group when compared with that of the PTSD group, but the level of binding to Homer1 changed more significantly than that of PSD‐95 (Figure 5C; Figure S6B, Supporting Information).