Opiate reinforcement and naloxone aversion, as revealed by place preference paradigm, in two strains of rats (Dymshitz 1987)
- Chamber size (25 x 79 x 36 cm).
- Two larger compartments (25 x 33 x 36 cm)
- chamber 1: white
- chamber 2: black
- Middle compartment (25 x 13 x 36 cm)
- Two sliding doors.
Microswitch mounted on the end of each apparatus triggers counters.