The Event-Related Potentials Responding to Outcome Valence and Expectancy Violation during Feedback Processing.
Cereb Cortex
; 31(2): 1060-1076, 2021 01 05.
Article
en En
| MEDLINE
| ID: mdl-32995836
ABSTRACT
Feedback-related negativity (FRN) is believed to encode reward prediction error (RPE), a term describing whether the outcome is better or worse than expected. However, some studies suggest that it may reflect unsigned prediction error (UPE) instead. Some disagreement remains as to whether FRN is sensitive to the interaction of outcome valence and prediction error (PE) or merely responsive to the absolute size of PE. Moreover, few studies have compared FRN in appetitive and aversive domains to clarify the valence effect or examine PE's quantitative modulation. To investigate the impact of valence and parametrical PE on FRN, we varied the prediction and feedback magnitudes within a probabilistic learning task in valence (gain and loss domains, Experiment 1) and non-valence contexts (pure digits, Experiment 2). Experiment 3 was identical to Experiment 1 except that some blocks emphasized outcome valence, while others highlighted predictive accuracy. Experiments 1 and 2 revealed a UPE encoder; Experiment 3 found an RPE encoder when valence was emphasized and a UPE encoder when predictive accuracy was highlighted. In this investigation, we demonstrate that FRN is sensitive to outcome valence and expectancy violation, exhibiting a preferential response depending on the dimension that is emphasized.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Aprendizaje por Probabilidad
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Encéfalo
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Retroalimentación Fisiológica
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Aprendizaje Discriminativo
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Potenciales Evocados
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Motivación
Tipo de estudio:
Clinical_trials
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Prognostic_studies
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Cereb Cortex
Asunto de la revista:
CEREBRO
Año:
2021
Tipo del documento:
Article
País de afiliación:
China