Summary
Strychnine sulphate injected into 2 groups of rats 24-hours and 3-days, respectively, prior to maze-learning improved performance. This suggests that following an injection the drug, or some effect of the drug on the body, endures for a relatively long period. Current research on memory is criticized.
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Cooper, R.M., Krass, M. Strychnine: Duration of the effects on maze-learning. Psychopharmacologia 4, 472–475 (1963). https://doi.org/10.1007/BF00403352
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DOI: https://doi.org/10.1007/BF00403352