Interestingly, we andothers have also found that GluA1 KO exhibit disturbances on tests for emotionality(Bannerman et al., 2004; Mead et al., 2006; Vekovischeva et al., 2004), and develop a‘depression-related’ phenotype on various tests that entail repeatedexposure to stressful situations (Chourbaji et al.,2008). This evidence concerns the gene GRIA1 and depressive symptom measurement.