Abstract—
In the rat, neonatal asphyxia produced by suffocation did not leave permanent visible lesions in thc brain, nor did it result in permanent motor impairment, although a delay in the development of some reflexes was observed. A transient retardation of body and brain growth, which was more pronounced in males, was found. By 5‐6 weeks of age, body and brain weights of asphyxiated rats were no longer significantly different from control animals. However, an increase in brain norepinephrine synthesis was found to persist after maturation. An alteration of serotonin metabolism was found after maturation only in asphyxiated males. The possibility that neonatal asphyxia in the rat is a model for abnormal development of monoamine metabolism, relevant to early childhood behavior disorders such as infantile autism or the syndrome of minimal brain dysfunction, is discussed.
The feral children literature has frequently been cited for relevance to understanding historical antecedents of autism. Kaspar Hauser, who appeared in Nuremberg, Germany in 1828, is one of these children, raised under conditions of extreme deprivation. His case history and gradual acquisition of language after age 17 years are summarized. There is strong evidence that he was the prince of Baden, abducted from his cradle in 1812. Findings of postmortem examination, conducted after his assassination, are discussed. Hauser's postadolescent recovery of language contradicts the notion of a "critical period" for language development.
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