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. Author manuscript; available in PMC: 2010 Aug 4.
Published in final edited form as: Physiol Behav. 2009 Apr 23;98(1-2):85–93. doi: 10.1016/j.physbeh.2009.04.016

Figure 2.

Figure 2

Mean (±SEM) number of meals per day (top panels) and corresponding mean meal sizes (bottom panels) during four fixed unit price schedules in groups of mice (Ns=8) required to emit either nose poke or lever press responses to obtain food. The left panels show the data analyzed using a 15 min inter-meal interval criterion, while the right panels show the same data analyzed using a 30 min criterion.