Aversive properties of naloxone in non-dependent (naive) rats may involve blockade of central beta-endorphin (Mucha 1985b)
Motivational properties of kappa and mu opioid receptor agonists studied with place and taste preference conditioning (Mucha 1985a)
- Place conditioning was carried out using 30 x 60 x 30 cm (w x l x h) Plexiglas boxes.
- Two equal compartments were painted white or flat black.
- The floors were either smooth black Plexiglas or textured (diamond pattern) white Plexiglas.