Imaging the Impact of Prenatal Alcohol Exposure on the Structure of the Developing Human Brain |
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Authors: | Email author" target="_blank">Catherine?LebelEmail author Florence?Roussotte Elizabeth?R?Sowell |
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Institution: | (1) Developmental Cognitive Neuroimaging Laboratory, Department of Neurology, University of California, 10833 Le Conte Ave, Room 16–131, Los Angeles, CA 90095–7332, USA |
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Abstract: | Prenatal alcohol exposure has numerous effects on the developing brain, including damage to selective brain structure. We
review structural magnetic resonance imaging (MRI) studies of brain abnormalities in subjects prenatally exposed to alcohol.
The most common findings include reduced brain volume and malformations of the corpus callosum. Advanced methods have been
able to detect shape, thickness and displacement changes throughout multiple brain regions. The teratogenic effects of alcohol
appear to be widespread, affecting almost the entire brain. The only region that appears to be relatively spared is the occipital
lobe. More recent studies have linked cognition to the underlying brain structure in alcohol-exposed subjects, and several
report patterns in the severity of brain damage as it relates to facial dysmorphology or to extent of alcohol exposure. Future
studies exploring relationships between brain structure, cognitive measures, dysmorphology, age, and other variables will
be valuable for further comprehending the vast effects of prenatal alcohol exposure and for evaluating possible interventions. |
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