Contributions of Reward Sensitivity to Ventral Striatum Activity Across Adolescence and Early Adulthood.

• Autores: Elisabeth Schreuders, Barbara R. Braams, Neeltje E. Blankenstein, Jiska S. Peper, Berna Güroğlu, Eveline A. Crone
• Localización: Child development, ISSN 0009-3920, Vol. 89, Nº. 3, 2018, págs. 797-810
• Idioma: inglés
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• Resumen

  • It was examined how ventral striatum responses to rewards develop across adolescence and early adulthood and how individual differences in state- and trait-level reward sensitivity are related to these changes. Participants (aged 8-29 years) were tested across three waves separated by 2 years (693 functional MRI scans) in an accelerated longitudinal design. The results confirmed an adolescent peak in reward-related ventral striatum, specifically nucleus accumbens, activity. In early to mid-adolescence, increases in reward activation were related to trait-level reward drive. In mid-adolescence to early adulthood decreases in reward activation were related to decreases in state-level hedonic reward pleasure. This study demonstrates that state- and trait-level reward sensitivity account for reward-related ventral striatum activity in different phases of adolescence and early adulthood. [ABSTRACT FROM AUTHOR]