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Cognitive Neuroscience of AgingLinking cognitive and cerebral aging$
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Roberto Cabeza, Lars Nyberg, and Denise Park

Print publication date: 2004

Print ISBN-13: 9780195156744

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780195156744.001.0001

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Electrophysiological and Optical Measures of Cognitive Aging

Electrophysiological and Optical Measures of Cognitive Aging

(p.85) 4 Electrophysiological and Optical Measures of Cognitive Aging
Cognitive Neuroscience of Aging

Monica Fabiani

Gabriele Gratton

Oxford University Press

This chapter reviews optical brain imaging and electrophysiology in the context of other available methodologies as they apply to aging research. Both methods emphasize the temporal aspects of the brain phenomena underlying cognition and thus allow for a closer parallel with cognitive studies using a mental chronometry approach to the study of aging. However, these two methods differ in the amount of localization information they provide, with electrophysiological methods yielding a coarser spatial description of brain activity and optical imaging meshing temporal and spatial information at a finer level. The spatial resolution of optical imaging may be close to that reached with functional magnetic resonance imaging (fMRI) or positron emission tomography (PET), especially when data from a number of subjects are combined, which leads to a loss of resolution for all techniques.

Keywords:   optical brain imaging, electrophysiology, cognition, brain function, functional magnetic resonance imaging, positron emission tomography, event-related brain potentials

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