Journal Article10.1007/S12311-010-0192-7
Adaptation, Expertise, and Giftedness: Towards an Understanding of Cortical, Subcortical, and Cerebellar Network Contributions
TL;DR: A framework that includes the brain’s vertical organization and considers “giftedness” from an evolutionary and neurodevelopmental vantage point is proposed and an integrated, dual-tiered model of cognition is reviewed that better explains the process of adaptation by simultaneously allowing for both stimulus-based processing and higher-order cognitive control.
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Abstract: Current cortico-centric models of cognition lack a cohesive neuroanatomic framework that sufficiently considers overlapping levels of function, from “pathological” through “normal” to “gifted” or exceptional ability. While most cognitive theories presume an evolutionary context, few actively consider the process of adaptation, including concepts of neurodevelopment. Further, the frequent co-occurrence of “gifted” and “pathological” function is difficult to explain from a cortico-centric point of view. This comprehensive review paper proposes a framework that includes the brain’s vertical organization and considers “giftedness” from an evolutionary and neurodevelopmental vantage point. We begin by discussing the current cortico-centric model of cognition and its relationship to intelligence. We then review an integrated, dual-tiered model of cognition that better explains the process of adaptation by simultaneously allowing for both stimulus-based processing and higher-order cognitive control. We consider the role of the basal ganglia within this model, particularly in relation to reward circuitry and instrumental learning. We review the important role of white matter tracts in relation to speed of adaptation and development of behavioral mastery. We examine the cerebellum’s critical role in behavioral refinement and in cognitive and behavioral automation, particularly in relation to expertise and giftedness. We conclude this integrated model of brain function by considering the savant syndrome, which we believe is best understood within the context of a dual-tiered model of cognition that allows for automaticity in adaptation as well as higher-order executive control.
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