Training and testing took place in a set of 16 identical MED Associates operant chambers enclosed in sound- and light-resistant shells. Each chamber was equipped with two pumps fitted with a syringe that delivered 0.1 ml of a 20% sucrose solution or a 20% polycose solution into a recessed magazine in the chamber. The chambers were also equipped with two food pellet dispensers that delivered either grain (45 mg; # F0165, BioServ Technologies), purified (45 mg; # F0021, BioServ Technologies) or chocolate purified pellets (F0299; BioServ, Flemington, NJ, USA) when activated. Two retractable levers were located to the left and the right of the magazine. A 3 W, 28 V house light provided illumination of the operant chamber, and an infrared photo beam spanning across the magazine opening detected head entries. Chambers contained a 28 V DC mechanical relay that was used to deliver a 2 Hz clicker stimulus and a white noise generator (80 dB). Two computers running MED Associates proprietary software (Med-PC; Fairfax, VT, USA) controlled the equipment and recorded responses. To achieve outcome devaluation via sensory-specific satiety, each rat was placed in an individual box located in a separate feeding room from where training and testing took place.
F0299
Manufactured by Bio-Serv
Sourced in United States
The F0299 is a laboratory equipment designed to measure the viscosity of fluids. It utilizes a rotating spindle to determine the resistance of a fluid to flow, providing an objective assessment of its viscosity.
Automatically generated - may contain errors
Lab products found in correlation
7 protocols using f0299
1
Operant Conditioning Chambers for Sucrose and Polycose Trials
2
Rat Spatial Learning and Memory
3
Nicotine Self-Administration in Rats: Pharmacological Modulation
4
Spatial Navigation in Male Rats
5
Operant Conditioning in Rat Food Studies
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Rats were trained to press a lever for food pellets in the operant chambers (Med Associates, St. Albans, VT). Food training was conducted before the catheters were implanted and also before the rats were treated with SCH 23390 or A77636 in the food studies. Responding on the active lever (right lever, RL) resulted in the delivery of a food pellet (45 mg, F0299, Bio-Serv, Frenchtown, NJ). Responding on the inactive lever (left lever, LL) was recorded but did not have scheduled consequences. Food delivery was paired with a cue light, which remained illuminated throughout the time-out (TO) period. The food training sessions were conducted for 10 days. Instrumental training started under an FR1-TO1s reinforcement schedule for 5 days (30 min session per day). After the fifth food training session, the rats were singly housed and remained singly housed for the rest of the study. On day 6, the time-out period was increased to 10 s. The rats were allowed to respond for food pellets under the FR1-TO10s schedule (20 min sessions) for 5 days. Both levers were retracted during the 10 s time-out period. During the food training period, the rats were fed 90–95% of their baseline food intake in the home cage.
6
Spatial Memory in Long-Evans Rats
7
Operant Responding and Locomotor Effects
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