Electrophysiological correlates of selective attention: A lifespan comparison |
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Authors: | Viktor Mueller Yvonne Brehmer Timo von Oertzen Shu-Chen Li Ulman Lindenberger |
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Institution: | 1.School of Psychology,Saarland University,Saarbrücken,Germany;2.Center for Lifespan Psychology,Max Planck Institute for Human Development,Berlin,Germany |
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Abstract: | Background To study how event-related brain potentials (ERPs) and underlying cortical mechanisms of selective attention change from childhood
to old age, we investigated lifespan age differences in ERPs during an auditory oddball task in four age groups including
24 younger children (9–10 years), 28 older children (11–12 years), 31 younger adults (18–25), and 28 older adults (63–74 years).
In the Unattend condition, participants were asked to simply listen to the tones. In the Attend condition, participants were
asked to count the deviant stimuli. Five primary ERP components (N1, P2, N2, P3 and N3) were extracted for deviant stimuli
under Attend conditions for lifespan comparison. Furthermore, Mismatch Negativity (MMN) and Late Discriminative Negativity
(LDN) were computed as difference waves between deviant and standard tones, whereas Early and Late Processing Negativity (EPN
and LPN) were calculated as difference waves between tones processed under Attend and Unattend conditions. These four secondary
ERP-derived measures were taken as indicators for change detection (MMN and LDN) and selective attention (EPN and LPN), respectively.
To examine lifespan age differences, the derived difference-wave components for attended (MMN and LDN) and deviant (EPN and
LPN) stimuli were specifically compared across the four age groups. |
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Keywords: | |
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