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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Eur Neuropsychopharmacol. 2008 Jun 24;18(11):794–802. doi: 10.1016/j.euroneuro.2008.05.004

Figure 1.

Figure 1

Diagram of experimental day. One candy meal followed by multiple food pellet meals were available on Monday, Wednesday and Friday, and only multiple food pellet meals were available on the remaining days of the week. A meal was initiated by the completion of a 30-min seeking interval during which every tenth response was followed by illumination of the lights that accompanied candy or food pellet delivery. Following the 30-min interval, every tenth response was followed by candy or food pellet delivery along with the light presentation. The taking component ended after the animal stopped responding for 10 min. In order to have another food pellet meal the animal had to gain complete the 30-min seeking interval. Thus timing and size of meals were determined individually by each animal.