Figure 2.

Mean maximum percent response rate as a function of signal duration in the Tri-Peak procedure using 10-, 30-, and 90-sec criterion durations for the Control (CON) and prenatal Methyllycaconitine (MLA), Choline (CHO), Nicotine (NIC), Choline + Nicotine (CHO + NIC), and Choline + Nicotine + Methyllycaconitine (CHO + NIC + MLA) treatment conditions. Selected data sets were combined because no significant differences in peak time or spread were observed for these treatment conditions. (CON/MLA*) CON, MLA, and CHO + NIC + MLA conditions combined; (CHO/NIC) CHO and NIC conditions combined.