<i>The Adolescent Brain</i>

Annals of the New York Academy of Sciences - Tập 1124 Số 1 - Trang 111-126 - 2008
B. J. Casey1, Rebecca M. Jones1, Todd A. Hare2
1Sackler Institute, Weill Medical College of Cornell University, New York, New York, USA
2California Institute of Technology, Pasadena, California USA

Tóm tắt

Adolescence is a developmental period characterized by suboptimal decisions and actions that are associated with an increased incidence of unintentional injuries, violence, substance abuse, unintended pregnancy, and sexually transmitted diseases. Traditional neurobiological and cognitive explanations for adolescent behavior have failed to account for the nonlinear changes in behavior observed during adolescence, relative to both childhood and adulthood. This review provides a biologically plausible model of the neural mechanisms underlying these nonlinear changes in behavior. We provide evidence from recent human brain imaging and animal studies that there is a heightened responsiveness to incentives and socioemotional contexts during this time, when impulse control is still relatively immature. These findings suggest differential development of bottom‐up limbic systems, implicated in incentive and emotional processing, to top‐down control systems during adolescence as compared to childhood and adulthood. This developmental pattern may be exacerbated in those adolescents prone to emotional reactivity, increasing the likelihood of poor outcomes.

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Annals of the New York Academy of Sciences

Tập 1124 Số 1

111-126

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