Cited by 2,790Aging and Gerontology ResearchCognitive Functions and MemoryNeural and Behavioral Psychology Studies

The adaptive brain: aging and neurocognitive scaffolding

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Park, Denise C., Reuter-Lorenz, Patricia·2009·Annual Review of Psychology

Abstract

There are declines with age in speed of processing, working memory, inhibitory function, and long-term memory, as well as decreases in brain structure size and white matter integrity. In the face of these decreases, functional imaging studies have demonstrated, somewhat surprisingly, reliable increases in prefrontal activation. To account for these joint phenomena, we propose the scaffolding theory of aging and cognition (STAC). STAC provides an integrative view of the aging mind, suggesting that pervasive increased frontal activation with age is a marker of an adaptive brain that engages in compensatory scaffolding in response to the challenges posed by declining neural structures and function. Scaffolding is a normal process present across the lifespan that involves use and development of complementary, alternative neural circuits to achieve a particular cognitive goal. Scaffolding is protective of cognitive function in the aging brain, and available evidence suggests that the ability to use this mechanism is strengthened by cognitive engagement, exercise, and low levels of default network engagement.

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Crossref · 10.1146/annurev.psych.59.103006.093656

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  • Compensation can occur at a neural level through competition and rearrangement among relatively autonomous processing circuits without explicit awareness.

    “At another level, compensation may occur by competition and rearrangements among relatively autonomous processing circuits, without explicit awareness on the part of the individual of how he or she is compensating (e.g., Cabeza, 2002; Colcombe, Kramer, Erickson, & Scalf, 2005; Park & Reuter-Lorenz, 2009; ReuterLorenz & Cappel, 2008; Salthouse, 1984; cf. Edelman, 1987).”

    From Enrichment Effects on Adult Cognitive Development: Can the Functional Capacity of Older Adults Be Preserved and Enhanced? (2008) · cites this paper as Park & Reuter-Lorenz, 2009

    In “The Scaffolding Theory of Cognitive Aging” (page unavailable), the paper describes neural compensation as recruiting additional circuitry and developing new pathways when existing circuitry cannot meet task demands. This supports compensation through changes in neural circuits, but the passages do not establish competition among relatively autonomous circuits or say that compensation occurs without explicit awareness. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Hippocampal function declines with age and is often measured by fear conditioning, which measures short-term memory.

    “Hippocampal function, critical for spatial and memory consolidation, declines with age (Gallagher et al., 2010; Miller and O’Callaghan, 2005; Park and Reuter-Lorenz, 2009) and is often measured by fear-conditioning, which measures short-term memory.”

    From Loss of epigenetic information as a cause of mammalian aging (2023) · cites this paper as Park and Reuter-Lorenz, 2009

  • Park and Reuter-Lorenz (2009) proposed that engagement in active mental challenge for a sustained period promotes formation of neural scaffolds.

    “Park and Reuter-Lorenz (2009) have proposed that engagement in such active mental challenge for a sustained period promotes the formation of “neural scaffolds,” that is, supportive neural circuitry that provides a source of additional neural resource compensating for age-related brain shrinkage and neural degradation.”

    From Training Older Adults to Use Tablet Computers: Does It Enhance Cognitive Function? (2016) · cites this paper as Park and Reuter-Lorenz (2009)

  • The Scaffolding Theory of Aging and Cognition (STAC) model proposes that neural scaffolding develops in response to continuous engagement associated with novel and cognitively challenging tasks.

    “the Scaffolding Theory of Aging and Cognition (STAC) model (Park & Reuter-Lorenz, 2009) proposes that neural scaffolding—recruitment of additional neural circuits to compensate for declining brain structures—develops in response to continuous engagement associated with novel and cognitively challenging tasks.”

    From Training Older Adults to Use Tablet Computers: Does It Enhance Cognitive Function? (2016) · cites this paper as Park & Reuter-Lorenz, 2009

  • Neural plasticity declines with age but is greater than previously thought.

    “Although such neural plasticity is reduced in old age, it remains more substantial than previously recognized”

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Research works printed but not linked: 2

  1. Hultsch DF Hertzog C Dixon RA Small BJ 1999 Memory Changes in the Aged London Cambridge Univ. Press
  2. Reuter-Lorenz PA Mikels J Yoshikawa S 2008 Affective working memory: converging evidence for a new construct Emotional Mind: New Directions in Affective Science In press

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Authors
Park, D. C., & Reuter-Lorenz, P.
Affiliations
  • The University of Texas at Dallas (US)
  • Department of Psychology, University of Michigan, Ann Arbor, Michigan 48109,
Venue
Annual Review of Psychology
Published
2009-01-01
Volume
60
Issue
1
Pages
173-196
ISSN
  • 0066-4308 (ISSN-L)
  • 1545-2085
OpenAlex
W2104897414
Cited by
2,790
References
135
Citations by year
2026: 195 · 2025: 223 · 2024: 181 · 2023: 179 · 2022: 183 · 2021: 163 · 2020: 165 · 2019: 191 · 2018: 185 · 2017: 149 · 2016: 162 · 2015: 141 · 2014: 176 · 2013: 141 · 2012: 128
FWCI
8.53
Type
journal article
Language
en
Open access
Locations
  • Annual Review of Psychology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Aging (R37AG006265)
Topics
  • Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Aging and Gerontology Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
brain aging, prefrontal cortex activation, cognitive decline, working memory, inhibitory control, long-term memory, white matter integrity, cognitive engagement, physical activity, default mode network
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Aging, Atrophy, Brain, Cognition, Cognition Disorders, Demyelinating Diseases, Dominance, Cerebral, Hippocampus, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Memory, Short-Term, Middle Aged, Nerve Net, Neuronal Plasticity, Verbal Learning, Prefrontal Cortex, Imaging, Three-Dimensional

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