FMR1 and fragile X syndrome: We focused in particular on tonic GABAergic inhibition because disruption of this form of inhibition, resulting from reduced expression of the eGABAAR specific δ-subunit, has been previously demonstrated following loss of FMRP in a model of FXS, the Fmr1 KO mouse (D’Hulst et al., 2006; Curia et al., 2009; Zhang et al., 2017).