Table 1 Estimated and calculated cocaine DST and estimated cocaine elimination half-life t1/2 in individual rats.

From: The progressive ratio and fixed ratio 1 schedules of cocaine self-administration in rats convey the same information

Rat

Baseline FR1 sessions

PR sessions

Post-PR FR1 sessions

Estimateda DST (µmol/kg)

Estimated t1/2 (s)

Calculatedb DST (µmol/kg)

Meanc t1/2 (s)

Calculated DST (µmol/kg)

Estimated DST (µmol/kg)

Estimated t1/2 (s)

Calculated DST (µmol/kg)

1

3.86 ± 0.49d

479 ± 44

4.07 ± 0.19

482

3.67 ± 0.08

3.86 ± 0.71

485 ± 61

3.71 ± 0.16

2

4.12 ± 0.96

462 ± 85

3.82 ± 0.46

529

4.45 ± 0.12

5.23 ± 1.03

596 ± 81

5.52 ± 0.34

3

4.05 ± 0.34

489 ± 29

4.39 ± 0.09

523

3.64 ± 0.07

4.29 ± 0.42

556 ± 37

3.85 ± 0.10

4

5.15 ± 0.51

451 ± 33

4.62 ± 0.16

453

3.43 ± 0.16

4.93 ± 0.21

454 ± 12

3.52 ± 0.57

5

4.77 ± 0.45

559 ± 38

5.70 ± 0.13

585

4.37 ± 0.13

5.39 ± 1.09

611 ± 84

4.93 ± 0.19

6

4.61 ± 0.14

468 ± 11

3.86 ± 0.53

510

4.81 ± 0.16

5.29 ± 0.97

552 ± 73

5.20 ± 0.20

Mean

4.43 ± 0.20

485 ± 16

4.41 ± 0.29

514 ± 18

4.06 ± 0.23

4.82 ± 0.25

542 ± 25

4.45 ± 0.35

  1. aEstimated using Eq. (2). bCalculated using the estimated half-lives. cMean of Baseline FR1 and Post-PR FR1 sessions. dMean ± SEM.