A general theory is proposed that attributes the origins of human intelligence to an
expansion of dopaminergic systems in human cognition. Dopamine is postulated to be the …

Hypertension in children and adolescents has become a major health problem recently
recognized, and in a significant number of patients it is due to an endocrine tumor. The aim …

Second-grade children were observed in classrooms on normal school days and on test
days from 9: 00 AM to 11: 00 AM Levels of excreted cortisol, epinephrine, and …

FIGURE 1. The embryonic development ofadrenergic cells and tumours that develop from
them (Adapted from Goldfien']. catecholamines are adrenaline (epinephrine), noradrenaline …

Fifteen boys and eleven girls between three and six years of age were examined at a day-
care center and at home as regards their catecholamine and cortisol excretion. Behaviour …

A method is described for quantitative analysis of urinary free and conjugated
catecholamines and metanephrines. The compounds are isolated from the urine by cation …

Urinary catecholamine excretion was assessed in 15 boys with attention-deficit/hyperactivity
disorder (ADHD) and 16 normal controls during a defined physical and mental task …

Pharmacologic and biochemical studies have provided indirect support for the involvement
of dopamine (DA) and norepinephrine (NE) in the pathophysiology of attention-deficit …

The human time structure consists of a spectrum of rhythms of different frequencies which
are superimposed on trends such as development and aging. In some variables and some …

Random urine samples were collected from 305 children aged from birth to 14 years and the
values of hydroxymethoxymandelic acid, homovanillic acid, noradrenaline, adrenaline, and …