Plasma noradrenalin and dopamine-beta-hydroxylase during behavioral testine of sexually deviant XYY and XXY males.

In a behavior study of a sexually deviant XYY and XXY male, who were both murderers, plasma noradrenaline (NAA), dopamine-beta-hydroxylase (DBH) were determined radioenzymatically under resting conditions and during exertional and emotional stress. Under a physical sork load on the bicycle ergometer both had normal plasma NA and DBH levels. During emotional stress both had NA increases of the same magnitude. During an arithmetic test NA values did not increase more than expected for the sitting position.