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. Author manuscript; available in PMC: 2010 Jul 7.
Published in final edited form as: Neuroscience. 2009 Mar 29;161(3):718–733. doi: 10.1016/j.neuroscience.2009.03.057

Figure 6.

Figure 6

Burst parameters. (A) Surprisingly, NAcc DAMGO infusion had no effect on burst duration, a correlate of palatability. VP inactivation decreased burst duration. (B) VP inactivation strongly reduced the number of bursts initiated. NAcc DAMGO infusion had no significant effects on the number of bursts. (C) Pause duration was not significantly altered by any treatment condition. For each graph, asterisks indicate significant difference (p<0.05) relative to control condition (NAcc saline + VP saline). (D) Though mean burst size was not elevated after NAcc DAMGO infusion, there was a significant positive correlation between DAMGO induced increases in consumption (x-axis, relative to saline condition) and increased burst duration (y-axis). Thus, DAMGO-induced consumption occurred in large part through longer bursts.