What happens when right means wrong? The impact of conflict arising from competing feedback responses
| Autor: | Thomas D. Ferguson, Olave E. Krigolson, Mathew R. Hammerstrom, Chad C. Williams |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
medicine.diagnostic_test General Neuroscience Control (management) Cognition Electroencephalography Task (project management) 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine Reinforcement learning Neurology (clinical) Psychology Molecular Biology 030217 neurology & neurosurgery Cognitive load Developmental Biology Stroop effect Cognitive psychology Meaning (linguistics) |
| Zdroj: | Brain research. 1761 |
| ISSN: | 1872-6240 |
| Popis: | Humans often rely on feedback to learn. Indeed, in learning the difference between feedback and an expected outcome is computed to inform future actions. Further, recent work has found that reward and feedback have a unique role in modulating conflict processing and cognitive control. However, it is still not clear how conflict, especially concerning the processing and evaluation of feedback, impacts learning. To address this, we examined the effects of feedback competition on feedback evaluation in a reinforcement learning task. Specifically, we had participants play a simple two-choice gambling game while electroencephalographic (EEG) data were recorded. On half of the experiment blocks, we reversed the meaning of performance feedback for each trial from its prepotent meaning to induce response conflict akin to the Stroop effect (e.g., ‘✓’ meant incorrect). Behaviourally, we found that participants’ accuracy was reduced as a result of incongruent feedback. Paralleling this, an analysis of our EEG revealed that incongruent feedback resulted in a reduction in amplitude of the reward positivity and the P300, components of the human event-related brain potential implicated in reward processing. Our results demonstrate the negative impact of conflict on feedback evaluation and the impact of this on subsequent performance. |
| Databáze: | OpenAIRE |
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