Figure 2From: Marine omega-3 polyunsaturated fatty acids induce sex-specific changes in reinforcer-controlled behaviour and neurotransmitter metabolism in a spontaneously hypertensive rat model of ADHDAnalysis of reinforcement-controlled behaviour. (a) Attention (stimulus control; percentage of responses on the reinforcer-producing lever) for the first lever-press following reinforcer delivery (sex × supplementation, F1,32 = 5.99, p = 0.02); (b) Attention (stimulus control; percentage of responses on the reinforcer-producing lever) for all responses (sex × supplementation, F1,32 = 3.66, p = 0.06); (c) Impulsivity (‘premature response’, lever presses with inter-response times <0.67 s) (sex × supplementation, F1,32 = 5.81 p = 0.02); (d) Lever-directed hyperactivity (all lever-presses) (sex × supplementation, F1,32 = 4.94, p = 0.03). Data are presented as means ± SEM (n = 7–11).Back to article page