Dystroglycan is necessary for CCh-induced increase of inhibitory currents in pyramidal cells. A, Representative example traces of sIPSC recordings before (baseline, left trace) and after the application of CCh (right) in control mice. Average sIPSCs are shown above the traces. B, Cumulative frequency plots of IEIs and amplitudes of sIPSCs from traces in A. C, Comparison of average sIPSC frequency and amplitude before and after application of CCh in control slices. Application of CCh resulted in typical increase of IPSC frequency in control pyramidal cells, but amplitude was not affected by CCh. D, Representative example traces of sIPSC recordings before (baseline, left trace) and after the application of CCh (right trace) in DG cKO mice. Average sIPSCs are shown above the traces. E, Cumulative frequency plots of IEIs and amplitudes of sIPSCs from traces in D. F, Comparison of average sIPSC frequency and amplitude before and after application of CCh in DG cKO slices. In contrast to control slices, application of CCh did not lead to a significant increase of sIPSC frequency in DG cKO pyramidal cells. Data points represent individual cells. **p < 0.01.