Abstract
The output of behavior of pigeons working on a fixed-interval schedule of positive reinforcement is reduced by intramuscular doses of 30 to 100 µg of l-epinephrine. Larger doses were required to suppress behavior on a small fixedratio schedule.
The potency of l-norepinephrine in suppressing behavior was about one-third, and the potencies of d-epinephrine and d-norepinephrine about onetenth, that of l-epinephrine. The suppressing action of l-epinephrine was greatly reduced by phenoxybenzamine.
Footnotes
- Received May 18, 1959.
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