ISSN : 1229-067X
This study reviews recent findings of brain plasticity in late adulthood, focusing on compensation hypotheses of cognitive aging. By clarifying the extent and characteristics of brain plasticity in the aging brain, this study re-evaluates current interventions for age-related cognitive decline. The models of compensatory plasticity in the aging brain, such as brain/cognitive reserve, posterior-anterior shift in aging (PASA), hemispheric asymmetry reduction in older adults (HAROLD), and load-shift theory, are discussed. Based on these accounts, current interventions for cognitive aging are re-assessed for their roles in preserving cognitive functions in late adulthood. Rehabilitations that are intended to offset adverse effects of neurological aging should be conducted in accordance with the direction of compensatory adjustments in the aging brain, reducing the cost derived from the overconsumption of compensatory resources.
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