MEA-recordings of mouse ES cell-derived neural populations. In a + b: Different electrophysiological parameters of MEA-recordings with or without IFNγ treatment in differentiated mouse ES cell-derived neural precursor cells at indicated time points are illustrated. In a: The synchrony of the neural network which is expressed in kappa values. In b: Bursts per minute are given. In a, the student´s t-test is applied. In b, linear regression is given with p- and F-values and, additionally, the t-test is performed for the 51 days in vitro time point. Values are means +/- standard error of mean (SEM). Experiments were performed in triplicate and repeated independently at least three times.