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Diminished choice effect on anticipating improbable rewards.

Weiran Chen1, Qi Li1, Shuting Mei1

  • 1Department of Psychology, Dalian Medical University, Dalian, China.

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Summary
This summary is machine-generated.

Exercising choice enhances perceived control and brain responses during reward anticipation. This effect is strongest with higher reward probabilities, linking control experience to reward value.

Keywords:
AnticipationChoicePerceived controlReward probabilityStimulus-preceding negativity

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Decision Making

Background:

  • Neural substrates for perceived control overlap with the reward system, particularly during reward anticipation.
  • The experience of choice is a key aspect of exercising control.

Purpose of the Study:

  • To investigate if reward probability modulates the brain's response to choice during reward anticipation.
  • To examine the relationship between perceived control, choice, and reward anticipation using electroencephalography (EEG).

Main Methods:

  • Thirty participants completed a cued gambling task with choice and no-choice conditions.
  • EEG recorded brain activity, focusing on the stimulus-preceding negativity (SPN) during reward anticipation.
  • Reward probability was manipulated at low, medium, and high levels.

Main Results:

  • Participants reported higher perceived control in the choice condition compared to the no-choice condition.
  • The stimulus-preceding negativity (SPN) was enhanced in the choice condition.
  • The SPN difference between choice and no-choice conditions decreased with lower reward probabilities.

Conclusions:

  • Perceived control through choice is linked to reward anticipation.
  • The influence of choice on neural reward anticipation processes is sensitive to reward probability.
  • These findings highlight the interplay between control, reward, and their underlying neural mechanisms.