Age differences in neural correlates of feedback processing after economic decisions under risk.
Neurobiol Aging
; 65: 51-59, 2018 05.
Article
em En
| MEDLINE
| ID: mdl-29407466
ABSTRACT
This study examines age-related differences in behavioral responses to risk and in the neurophysiological correlates of feedback processing. Our sample was composed of younger, middle-aged, and older adults, who were asked to decide between 2 risky options, in the gain and loss domains, during an EEG recording. Results evidenced group-related differences in early and later stages of feedback processing, indexed by differences in the feedback-related negativity (FRN) and P3 amplitudes. Specifically, in the loss domain, younger adults showed higher FRN amplitudes after non-losses than after losses, whereas middle-aged and older adults had similar FRN amplitudes after both. In the gain domain, younger and middle-aged adults had higher P3 amplitudes after gains than after non-gains, whereas older adults had similar P3 amplitudes after both. Behaviorally, older adults had higher rates of risky decisions than younger adults in the loss domain, a result that was correlated with poorer performance in memory and executive functions. Our results suggest age-related differences in the outcome-related expectations, as well as in the affective relevance attributed to the outcomes, which may underlie the group differences found in risk-aversion.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Assunção de Riscos
/
Envelhecimento
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Retroalimentação Psicológica
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Tomada de Decisões
Tipo de estudo:
Etiology_studies
/
Health_economic_evaluation
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Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article