We thank the reviewer for their suggestion and have now computed AMPA-NMDA ratios and included a phrase in lines 424-425 that summarises the statistics for the comparison of AMPA-NMDA ratios between the GluN2B variants (WT and mutants).
Since mutations can affect NMDA receptor localization, data on whether AMPA/NMDA ratios changed would be informative. It follows from the methodology that AMPA currents were recorded on a regular basis.