Skip to main content

Table 2 Individual variability in behavior by sex and drug exposure (SAL = saline, NIC = nicotine) across the last 10 days of training. The coefficient of variation (see text) was calculated for each animal and averaged across groups for each sign-or goal-tracking behavior (presented as mean ± SEM)

From: Sex differences in nicotine-enhanced Pavlovian conditioned approach in rats

 

Lever latencya

Lever press

Lever probability

Receptacle latency

Receptacle entries

Receptacle probabilityb

SAL Female

26.6 ± 2.9

40.1 ± 10.3

20.0 ± 5.8

34.6 ± 4.7

27.8 ± 3.4

10.3 ± 3.3

NIC Female

28.1 ± 2.2

21.7 ± 2.1

4.6 ± 0.9

30.4 ± 2.2

22.4 ± 2.4

2.4 ± 0.9

SAL Male

17.6 ± 2.2

44.8 ± 8.4

30.2 ± 7.9

29.4 ± 2.9

29.4 ± 2.9

11.1 ± 3.4

NIC Male

26.1 ± 3.6

45.6 ± 15.1

25.7 ± 14.7

29.9 ± 2.6

24.0 ± 4.5

5.0 ± 2.7

  1. aMain effect of sex (p < 0.05), with females more variable than males (collapsed across exposure)
  2. bMain effect of exposure (p < 0.05), with SAL groups more variable than NIC groups (collapsed across sex)