Que PASA? The Posterior-Anterior Shift in Aging
Duke University · University of Amsterdam
Abstract
A consistent finding from functional neuroimaging studies of cognitive aging is an age-related reduction in occipital activity coupled with increased frontal activity. This posterior-anterior shift in aging (PASA) has been typically attributed to functional compensation. The present functional magnetic resonance imaging sought to 1) confirm that PASA reflects the effects of aging rather than differences in task difficulty; 2) test the compensation hypothesis; and 3) investigate whether PASA generalizes to deactivations. Young and older participants were scanned during episodic retrieval and visual perceptual tasks, and age-related changes in brain activity common to both tasks were identified. The study…
Citation impact
- FWCI
- 15.62
- Percentile
- 100%
- References
- 81
Authors
5Topics & keywords
- Generalizability theory
- Neuroimaging
- Psychology
- Functional magnetic resonance imaging
- Neuroscience
- Functional neuroimaging
- Cognition
- Posterior parietal cortex