Figure 9. Currents were recorded from a single outside-out patch, in the absence and presence of ketamine. (A) Current traces are displayed at two different time scales (100 ms and 33.3 ms). The solid bars with arrows indicate the data selected for higher resolution. (B) Histograms of the current amplitude for all openings longer than 300 micro second, recorded in the absence and presence of ketamine (1 micro Meter), are shown. The distributions were fitted by a single Gaussian curve with mean values of 3.03 +/- 0.54 pA (n = 2,450 events) and 2.95 +/- 0.47 pA (n = 6,345 events), respectively.