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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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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 24 October 2021

Cognitive Reserve and Aging

Cognitive Reserve and Aging

(p.93) 6 Cognitive Reserve and Aging
Imaging the Aging Brain

Yaakov Stern

Oxford University Press

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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