ERIC Number: EJ918209
Record Type: Journal
Publication Date: 2008
Abstractor: As Provided
Reference Count: 0
Fronto-Limbic Functioning in Children and Adolescents with and without Autism
Loveland, Katherine A.; Bachevalier, Jocelyne; Pearson, Deborah A.; Lane, David M.
Neuropsychologia, v46 n1 p49-62 2008
We used neuropsychological tasks to investigate integrity of brain circuits linking orbitofrontal cortex and amygdala (orbitofrontal-amygdala), and dorsolateral prefrontal cortex and hippocampus (dorsolateral prefrontal-hippocampus), in 138 individuals aged 7-18 years, with and without autism. We predicted that performance on orbitofrontal-amygdala tasks would be poorer in the Autism group compared to the Non-Autism group regardless of intellectual level (verbal mental age, VMA) and that performance on dorsolateral prefrontal-hippocampus tasks would be associated primarily with intellectual level. Predicted differences between Autism and Non-Autism groups on orbitofrontal-amygdala tasks were present but greater in individuals with higher VMA. On dorsolateral prefrontal-hippocampus tasks, poorer performance by the Autism compared to the Non-Autism group was found at all VMA levels. Group differences suggest both brain circuits are impaired in autism, but performance on all tasks is also associated with intellectual level.
Descriptors: Autism, Brain, Neurological Impairments, Brain Hemisphere Functions, Children, Adolescents, Comparative Analysis, Mental Age, Cognitive Ability, Intelligence Quotient
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A