Genetic and Neurochemical Modulation of Prefrontal Cognitive Functions in Children

Abstract

The findings provide an existence proof that genotypic differences can relate to differences in cognitive performance in typically developing children. The authors achieved a level of specificity never previously attempted; the COMT polymorphism was found to be differentially related to performance on tasks linked to the same prefrontal region by whether cognitive requirements of the tasks were sensitive to the level of dopamine found. These results challenge accepted notions that since dopamine is important for some cognitive functions dependent on the prefrontal cortex, it is important for all. The differential sensitivity of distinct cognitive abilities to specific neurotransmitters may make possible targeted pharmacological interventions.