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. 2012 Dec 5;7(12):e50409. doi: 10.1371/journal.pone.0050409

Figure 1. Food reward seeking and NILA are behaviorally related traits.

Figure 1

A. Outbred Sprague-Dawley rats were divided into high NILA (HLA, n = 8) and low NILA rats (LLA, n = 8); the NILA response of LLA rats was significantly lower compared to that of HLA rats during the 30 minute period of testing. B. Number of sugar rewards earned on a progressive ratio schedule was significantly correlated with the NILA response (n = 31). C. High NILA rats earned more sugar rewards than low NILA rats. D. NILA response was significantly correlated with the amount of work rats were willing to expand for sugar rewards. E. High NILA rats display greater lever pressing rates for sugar rewards. **P<0.005.