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- Journalpub. par l'Office permanent de l'Institut international de statistique.Digital Access Full text via HathiTrust, I-VIII.
- ArticleSitaram N, Weingartner H, Gillin JC.Science. 1978 Jul 21;201(4352):274-6.Arecholine (4 milligrams), a cholinergic agonist, and choline (10 grams), a precursor of acetylcholine, significantly enhanced serial learning in normal human subjects. The subjects received methscopolamine prior to both arecholine and placebo injections. Conversely, scopolamine (0.5 milligram), a cholinergic antagonist, impaired learning and this impairment was reversed by arecholine and choline and the impairment after scopolamine were inversely proportional to the subject's performance on placebo; that is, "poor" performers were more vulnerable to both the enhancing effect of cholinergic agonist and precursor and the impairment after cholinergic antagonist than "good" performers.