Table 2.
Observer groups |
Assay | Train: fentanyl to demonstrators in the home cage |
Train: vehicle to demonstrators in the home cage |
Test |
---|---|---|---|---|
Daily | Conditional place preference and concomitant locomotion |
Predicts fentanyl and vehicle injections on both sides |
N.A.: demonstrators receive fentanyl again in home cage |
Fentanyl to demonstrators: observers expect an injection |
Drug | Conditional place preference and concomitant locomotion |
Predicts fentanyl on the fentanyl-paired side |
Predicts vehicle on the vehicle-paired side |
Fentanyl to demonstrators: observers expect fentanyl on the fentanyl-paired side |
No Drug | Conditional place preference and concomitant locomotion |
Predicts vehicle on the vehicle-paired side |
Predicts fentanyl on the fentanyl-paired side |
Fentanyl to demonstrators: observers expect vehicle on the vehicle-paired side |