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Imaging the Aging Brain$
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William Jagust and Mark D'Esposito

Print publication date: 2009

Print ISBN-13: 9780195328875

Published to Oxford Scholarship Online: February 2010

DOI: 10.1093/acprof:oso/9780195328875.001.0001

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Cognitive Reserve and Aging

Cognitive Reserve and Aging

Chapter:
(p.93) 6 Cognitive Reserve and Aging
Source:
Imaging the Aging Brain
Author(s):

Yaakov Stern

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195328875.003.0006

The concept of reserve has been proposed to account for the disjunction between the degree of brain damage and its clinical outcome. After reviewing epidemiologic data supporting the concept of cognitive reserve, this chapter focuses on methodologic approaches for imaging studies intended to delineate the neural underpinnings of cognitive reserve (CR). It suggests three interrelated questions that can guide this research: Do old and young individuals use the same or different networks to mediate task performance? If they use the same network, can CR be related to individual differences in network efficiency and capacity? If they use different networks, can CR be related to this compensatory activation? Finally it raises the possibility that CR might be mediated by a generalized network that is independent of the specific demands of the task at hand.

Keywords:   efficiency, capacity, compensation, dedifferentiation, aging, Alzheimer's disease, cognitive reserve

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