Figure 4. The effects of the benzodiazepines diazepam (A) and midazolam (B) on voltage-dependent steady state inactivation of the whole-cell inward Ca (2+) current. The inactivation curves were generated under control conditions ([black circle], solid line) and then repeated in the presence of one of the benzodiazepines ([white circle], dashed line). Symbols represent the mean +/− SD (n = 7).