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Temporal cues guide attentional resources toward relevant points in time, resulting in optimized behavioral performance. Although deficits in aspects of attention have been documented in older adults, it remains unknown whether the critical ability to orient attention in time is affected by normal aging. To address this, younger and older adults participated in a temporally cued target-response experiment while electroencephalographic data were recorded. Three conditions (one detection and two discrimination tasks) were used to manipulate task complexity. Response times show that younger adults, but not older adults, used temporal cues to enhance performance regardless of task complexity. Similarly, alpha band activity (8-12 Hz) and the contingent negative variation preceding targets indicated that only younger adults engaged prestimulus, anticipatory neural mechanisms associated with temporal cues. Overall, these results provide novel evidence that older adults do not use temporal cues to orient attention in time and support an expectation deficit in normal aging.

Original publication

DOI

10.1523/JNEUROSCI.1149-11.2011

Type

Journal article

Journal

J Neurosci

Publication Date

31/08/2011

Volume

31

Pages

12461 - 12470

Keywords

Adult, Aged, Aged, 80 and over, Aging, Analysis of Variance, Attention, Cues, Electroencephalography, Evoked Potentials, Visual, Female, Functional Laterality, Humans, Male, Middle Aged, Neuropsychological Tests, Photic Stimulation, Reaction Time, Signal Detection, Psychological, Space Perception, Young Adult