Restoration of tracking proficiency as a function of amount and delay of analeptic medication.

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Abstract
Human Ss[subjects] were run on a complex tracking task sufficiently long to lower efficiency markedly. They were then given various placebo and dosage levels of amphetamine sulphate, and were again tested. Results were analyzed in terms of losses relative to peak efficiency and gains relative to immediate premedication levels. Both variables were related to dosage by second-order equations. Absolute efficiency loss was linearly related to delay of dosage. The results are discussed in relation to Hebb''s theories of vigilance and cue functions. 16 references.

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