Placebo effect in the rat.
Scopolamine hydrobromide disrupts the learned behavior of rats in a predictable manner. Physiological saline mimics to some extent the effect of the drug when the two substances are alternately administered in a series of injections. This placebo effect appears to be an instance of simple Pavlovian conditioning.
D000818:Animals; D003214:Conditioning, Classical; D007858:Learning; D015990:Placebo Effect; D010919:Placebos; D051381:Rats; D012601:Scopolamine
D010919:Placebos; D012601:Scopolamine
LEARNING; PLACEBOS; SCOPOLAMINE