from Section VII - Developmental Disorders
Published online by Cambridge University Press: 10 January 2011
Introduction
In the last decades, studying genetic neuropsychiatric syndromes at multiple levels has proven to be a powerful means for elucidating the pathways of both typical and atypical neurodevelopment. Within this context, Williams–Beuren syndrome, or Williams syndrome (WS) for short, has been established as model syndrome of special interest to investigate gene–brain–behavior relationships and a “unique window to genetic contributions to neural function” (Meyer-Lindenberg et al.,2006, p. 391).
WS is a relatively rare neurodevelopmental disorder characterized by a combination of distinctive clinical, cognitive, behavioral, genetic and neuroanatomical features. It was first described in the early 1960s by two groups of cardiologists as a condition involving a constellation of cardiovascular abnormalities, hypercalcemia, peculiar facial “elfin-like” features, and mild to moderate mental retardation (Beuren et al., 1962; Williams et al., 1961).
Insights into the nature of WS culminated in the mid 1990s with the identification of the genetic cause, a so-called microdeletion (see below, Genetic profile). Since then, several neuroimaging studies, using a wide range of new imaging techniques, have attempted to uncover the structural and functional neural substrates of WS, providing an emerging understanding of brain mechanisms mediating between genetic variation and cognitive-behavioral phenotypes in humans.
The aim of this chapter is to review imaging studies delineating the unique neuropsychiatric features of WS, as well as recent advances in investigating the neural substrates of the disorder, which have provided significant contributions to unraveling the impact of a specific genetic defect on brain structure and function.
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.