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A new integrative model of cerebral activation, deactivation and default mode function in Alzheimer’s disease

A new integrative model of cerebral activation, deactivation and default mode function in... Functional imaging methods such as positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) allow in vivo assessment of cerebral metabolism at rest and cerebral responses to cognitive stimuli. Activation studies with different cognitive tasks have deepened the understanding of underlying pathology leading to Alzheimer disease (AD) and how the brain reacts to and potentially compensates the imposed damage inflicted by this disease. The aim of this manuscript study was to summarize current findings of activation studies in healthy people at risk for AD, in people with mild cognitive impairment (MCI) as a possible progenitor of AD and finally in patients with manifest AD, adding recent results about impaired deactivation abilities and default mode function in AD. A new comprehensive model will be introduced integrating these heterogeneous findings and explaining their impact on cognitive performance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Nuclear Medicine and Molecular Imaging Springer Journals

A new integrative model of cerebral activation, deactivation and default mode function in Alzheimer’s disease

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References (144)

Publisher
Springer Journals
Copyright
Copyright © 2008 by Springer-Verlag
Subject
Medicine & Public Health; Oncology ; Cardiology; Orthopedics ; Imaging / Radiology; Nuclear Medicine
ISSN
1619-7070
eISSN
1619-7089
DOI
10.1007/s00259-007-0698-5
pmid
18299829
Publisher site
See Article on Publisher Site

Abstract

Functional imaging methods such as positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) allow in vivo assessment of cerebral metabolism at rest and cerebral responses to cognitive stimuli. Activation studies with different cognitive tasks have deepened the understanding of underlying pathology leading to Alzheimer disease (AD) and how the brain reacts to and potentially compensates the imposed damage inflicted by this disease. The aim of this manuscript study was to summarize current findings of activation studies in healthy people at risk for AD, in people with mild cognitive impairment (MCI) as a possible progenitor of AD and finally in patients with manifest AD, adding recent results about impaired deactivation abilities and default mode function in AD. A new comprehensive model will be introduced integrating these heterogeneous findings and explaining their impact on cognitive performance.

Journal

European Journal of Nuclear Medicine and Molecular ImagingSpringer Journals

Published: Feb 26, 2008

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