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Neural dynamics underlying the illusion of control during reward processing
Ya Zheng1,2, Canming Yang3, Huiping Jiang4
1Department of Psychology, Guangzhou University, Guangzhou 510006, China.
Social Cognitive and Affective Neuroscience
|September 20, 2024
Summary
People overestimate their control over random events, a bias linked to altered brain activity in reward anticipation, prediction errors, and motivation. This study reveals how the illusion of control impacts our reward system dynamics.
Area of Science:
- Neuroscience
- Behavioral Economics
- Cognitive Psychology
Background:
- The illusion of control is a cognitive bias where individuals overestimate their influence on random events.
- This bias can lead to inaccurate reward probability estimations, impacting decision-making.
- Understanding the neural underpinnings of this bias is crucial for explaining human behavior in uncertain environments.
Purpose of the Study:
- To investigate how the illusion of control modulates the brain's reward system.
- To explore the neural dynamics associated with this behavioral bias.
- To provide a mechanistic understanding of the illusion of control through reward system alterations.
Main Methods:
- Participants performed a behavioral task involving choices with random outcomes.
- An event-related potential (ERP) study was conducted during the task.
- Neural signals, including stimulus-preceding negativity, reward positivity, and P300, were analyzed.
Main Results:
- Behavioral data confirmed a classical illusion of control, with participants valuing self-chosen outcomes higher than random ones.
- ERP analysis showed reduced reward anticipation (stimulus-preceding negativity).
- Diminished positive prediction error signals (reward positivity) and enhanced motivational salience (P300) were observed.
Conclusions:
- The illusion of control is associated with specific alterations in neural reward processing.
- Neural dynamics reveal reduced anticipation, prediction error signaling, and increased motivational salience.
- These findings offer a mechanistic explanation for the illusion of control within the framework of reward system modulation.
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