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. 2005 Nov;12(6):557–563. doi: 10.1101/lm.28105

Figure 4.

Figure 4.

Acquisition of operant conditioning in control and MSDB-lesioned rats. (A) Effect of selective cholinergic MSDB lesion on the last three sessions of the training to associate reinforcements with lever pressures. (B) Learning curves of saline- and 192-IgG-saporin-injected rats (n = 10 per group) during the 10 sessions of a 30-sec fixed-interval program. Continuous line, total number of pellets per session; discontinuous line, number of pellets obtained by conditioned lever pressures per session. Saline-injected rats (○), 192-IgG-saporin-injected rats (•).