Journal
BIOLOGICAL PSYCHOLOGY
Volume 115, Issue -, Pages 50-63Publisher
ELSEVIER
DOI: 10.1016/j.biopsycho.2016.01.008
Keywords
Aging; Older adult; Cognitive control; Conflict adaptation; Congruency sequence effects; Event-related potential; N2; Anterior cingulate (ACC); Error-related negativity (ERN); Error positivity (Pe); Post-error slowinga
Funding
- Brigham Young University Gerontology Program
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Older adults display alterations in neural reflections of conflict-related processing. We examined response times (RTs), error rates, and event-related potential (ERP; N2 and P3 components) indices of conflict adaptation (i.e., congruency sequence effects) a cognitive control process wherein previous-trial congruency influences current-trial performance, along with post-error slowing, correct-related negativity (CRN), error-related negativity (ERN) and error positivity (Pe) amplitudes in 65 healthy older adults and 94 healthy younger adults. Older adults showed generalized slowing, had decreased post-error slowing, and committed more errors than younger adults. Both older and younger adults showed conflict adaptation effects; magnitude of conflict adaptation did not differ by age. N2 amplitudes were similar between groups; younger, but not older, adults showed conflict adaptation effects for P3 component amplitudes. CRN and Pe, but not ERN, amplitudes differed between groups. Data support generalized declines in cognitive control processes in older adults without specific deficits in conflict adaptation. (C) 2016 Elsevier B.V. All rights reserved.
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