Key resources table.

Reagent type (species) or resource	Designation	Source or reference	Identifiers	Additional information
Strain, strain background (Mus musculus, ♀ and ♂)	Gria4tm1.1Mony/Gria4tm1.1Mony(‘GluA4-KO’)	Fuchs et al., 2007	RRID:MGI:3804915
Antibody	Anti-GluA4 F-9 (mouse monoclonal)	Santa Cruz Biotechnology	Cat. # sc-271894 RRID:AB_10715096	WB (1:100–1:200)
Antibody	Anti-GABAAR-α6 (rabbit polyclonal)	Alomone	Cat. # AGA-004 RRID:AB_2039868	WB (1:500)
Antibody	Anti-GAPDH GA1R (mouse monoclonal)	Thermo Fisher Scientific	Cat. # MA5-15738-1MG RRID:AB_2537652	WB (1:2000)
Antibody	Anti-β-tubulin (mouse monoclonal)	Developmental Studies Hybridoma Bank	Cat. # E7 RRID:AB_2315513	WB (1:1000)
Chemical compound, drug	Bicuculline methiodide	Sigma-Aldrich	Cat. # 14343
Chemical compound, drug	Strychnine	Sigma-Aldrich	Cat. # S8753
Chemical compound, drug	GYKI-53655	Tocris	Cat. # 2555
Chemical compound, drug	NBQX	HelloBio	Cat. # HB0443
Chemical compound, drug	d-APV	Tocris	Cat. # 0106
Chemical compound, drug	TTX	Tocris	Cat. # 1069
Software, algorithm	Igor Pro	WaveMetrics	RRID:SCR_000325	Version 6.37
Software, algorithm	NeuroMatic	Rothman and Silver, 2018	RRID:SCR_004186	Version 3.0 c
Software, algorithm	R	The R Foundation	RRID:SCR_001905	Version 3.6.3
Software, algorithm	lme4	Bates et al., 2015	RRID:SCR_001905	Version 1.0–5
Software, algorithm	effsize	https://github.com/mtorchiano/effsize/ Torchiano et al., 2020		Version 0.8.1
Software, algorithm	sjstats	https://strengejacke.github.io/sjstats/ Lüdecke, 2018		Version 0.18.1
Software, algorithm	Python	Python Software Foundation	RRID:SCR_008394	Version 2.7 or 3.7
Software, algorithm	ImageJ	NIH	RRID:SCR_003070	Version 2.1.0
Other	Borosilicate glass	Science Products	Cat. # GB150F-10P	Outer/inner diameter: 1.5/0.86 mm