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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Neurotoxicol Teratol. 2012 Jan 15;34(2):221–231. doi: 10.1016/j.ntt.2012.01.001

Figure 6.

Figure 6

Mean ± SEM overall response rate (top panel) and lever run rate (bottom panel) for male offspring during the random ratio (RR) operant procedure. For the overall response rate, data were averaged across the RR value. The 80 ppm group responded at a higher rate than the control during session 1 and the 8 ppm group responded at a higher rate than the control during session 2. For the lever run rate, the 8 and 80 ppm groups responded at higher rates than the control during session 11, 12, and 16. Sample size: 0 ppm n = 11 litters, 8 ppm n = 10, 25 ppm n = 9, 80 ppm n = 10.