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Contextual valence modulates the effect of choice on incentive processing.

Shuting Mei1, Wei Yi1, Shiyu Zhou1

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Choice enhances neural activity in reward processing, but this effect depends on whether the context involves gains or losses. Voluntary choice plays a key role in how the brain processes incentives.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Decision Making

Background:

  • Previous studies show choice enhances reward-related neural activity in gain contexts.
  • The effect of choice on neural activity across gain and loss contexts is not fully understood.

Purpose of the Study:

  • To investigate if the modulatory effect of choice on neural activity extends to both gain and loss contexts.
  • To examine neural responses during both anticipatory and consummatory phases of incentive processing.

Main Methods:

  • Event-related potential (ERP) study with 32 participants.
  • A simple choice task comparing self-choice vs. computer-choice conditions.
  • Incentive processing in both gain (gain vs. nongain) and loss (nonloss vs. loss) contexts.

Main Results:

  • Participants reported higher perceived control in choice vs. no-choice and gain vs. loss conditions.
  • Anticipatory phase: increased cue-P3 in loss context, enhanced stimulus-preceding negativity in gain context for choice.
  • Consummatory phase: larger reward positivity (ΔRewP) for choice in gain vs. loss context; comparable feedback P3.

Conclusions:

  • The impact of voluntary choice on reward processing is context-dependent, varying with valence (gain vs. loss).
  • Neural mechanisms underlying choice effects differ between anticipatory and consummatory phases and across contexts.