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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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Age-Related Changes in NeuralActivity During Visual Perception and Attention

Age-Related Changes in NeuralActivity During Visual Perception and Attention

Chapter:
(p.157) 7 Age-Related Changes in NeuralActivity During Visual Perception and Attention
Source:
Cognitive Neuroscience of Aging
Author(s):

David J. Madden

Wythe L. Whiting

Scott A. Huettel

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195156744.003.0007

This chapter presents an overview of age-related changes in sensory systems that alter the identification of objects and events in the environment. It reviews the behavioral literature on perception and attention, documenting decreases in sensory function with age and the centrality of theories of decreased speed of processing in accounting for many age differences in perception and attention. It discusses age differences in attention, as well as the instances when some types of attentional processes remain age invariant. The chapter then reviews the neurobiological underpinnings of attention and perception in young adults, which sets the stage for a detailed discussion of what has been learned about age differences in neural activation and pathways for object recognition and attention. The picture presented is one of decreased efficiency and less differentiation of neural pathways mediating object recognition and higher order visual processes, along with instances of compensatory activation.

Keywords:   visual processing, attention, neuroimaging, aging, neural activation

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