Serotonin is known to play a role in brain development prior to the time it assumes its role as
a neurotransmitter in the mature brain. Serotonin regulates both the development of …

Serotonin (5-hydroxytryptamine, 5-HT), the “happy hormone,” has a phylogenetically ancient
role in neural transmission (Turlejski, 1996). Because the serotonergic system has a …

Fragile X syndrome [fra (X)] is currently accepted as the second most frequent chromosomal
disorder associated with developmental disability. Although next to Down syndrome in …

Down syndrome is the set of physical, mental, and functional abnormalities that result from
trisomy 21, the presence in the genome of three rather than the normal two chromosomes …

All Down syndrome (DS) children have different degrees of developmental disabilities,
developmental delay, and developmental brain abnormalities associated with CNS …

Dendritic branching was evaluated in the visual cortex of 8 children with Down's syndrome
and 10 controls, ranging in age from 4 months to 7 years and divided into infantile, late …

Samples of the hippocampus of four patients with Down's syndrome [two men aged 35 and
36 years with no evidence of Alzheimer's disease (AD) and two patients aged 47 and 55 …

Although the subject of this book is aneuploidy and its effects in man, it includes
consideration of species other than man in some of its six parts. Part III, on the primary and …

In this chapter we shall examine the processes of emotion regulation and dysregulation. We
define emotion regulation as the intra-and extraorganismic factors by which emotional …

• Quantitative studies of brain morphology in a group of subjects with Williams syndrome
revealed a distinctive pattern of dysmorphology unlike that observed in another form of …