Effects of scopolamine, atropine, and d-Amphetamine on internal and external control of responding on non-reinforced trials

Cholinergic mechanisms in the control of behavior by the brain.

1963 • 542 citations

Influence of drugs on behavior controlled by internal and external stimuli.

1966 • 144 citations

THE EFFECT OF MULTIPLE S^Δ PERIODS ON RESPONDING ON A FIXED‐INTERVAL SCHEDULE¹

1962 • 124 citations

Effects of scopolamine on discriminated responding in the rat.

1959 • 90 citations

A behavioral and pharmacological analysis of reinforcement withdrawal

1970 • 53 citations

The effects of scopolamine hydrobromide and methyl scopolamine hydrobromide upon the discrimination of interoceptive and exteroceptive stimuli

1969 • 29 citations