The Brain on Stress: Vulnerability and Plasticity of the Prefrontal Cortex over the Life Course

Bruce S. McEwen, John Morrison

Research output: Contribution to journalReview article

399 Scopus citations

Abstract

The prefrontal cortex (PFC) is involved in working memory and self-regulatory and goal-directed behaviors and displays remarkable structural and functional plasticity over the life course. Neural circuitry, molecular profiles, and neurochemistry can be changed by experiences, which influence behavior as well as neuroendocrine and autonomic function. Such effects have a particular impact during infancy and in adolescence. Behavioral stress affects both the structure and function of PFC, though such effects are not necessarily permanent, as young animals show remarkable neuronal resilience if the stress is discontinued. During aging, neurons within the PFC become less resilient to stress. There are also sex differences in the PFC response to stressors. While such stress and sex hormone-related alterations occur in regions mediating the highest levels of cognitive function and self-regulatory control, the fact that they are not necessarily permanent has implications for future behavior-based therapies that harness neural plasticity for recovery

Original languageEnglish (US)
Pages (from-to)16-29
Number of pages14
JournalNeuron
Volume79
Issue number1
DOIs
StatePublished - Jul 10 2013
Externally publishedYes

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ASJC Scopus subject areas

  • Neuroscience(all)

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