1. Aceto, M.D., Bentley, H.C.: A simple apparatus for measuring general activity of animals. Arch. int. Pharmacodyn. 162, 371?377 (1966).
2. Boissier, J. R., Simon, P., Lwoff, J.: L'utilisation d'une reaction particulière de la souris pour l'étude des médicaments psychotropes. Thérapie 19, 571?589 (1964).
3. Cladel, C. E., Cho, M. H., McDonald, R. D.: The effect of amphetamine and catecholamines on startle response and motor activity of rats. Nature (Lond.) 210, 864?865 (1966).
4. Dews, P. B.: The influence of drugs on voluntary activity in mice. Brit. J. Pharmacol. 8, 46?48 (1953).
5. Greenblatt, E. N., Osterberg, A. C.: Correlations of activating and lethal effects of excitatory drugs in grouped and isolated mice. J. Pharmacol. exp. Ther. 131, 115?119 (1961).