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Neurocomputational mechanisms underlying motivated seeing.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Decision Science

Background:

  • Perception is often assumed to be objective, yet individuals report seeing what they desire.
  • Distinguishing between perceptual changes and response biases in motivated perception is challenging.

Purpose of the Study:

  • To investigate how motivation influences perception and decision-making.
  • To differentiate neural mechanisms underlying perceptual bias versus response bias in motivated seeing.

Main Methods:

  • A visual categorization task was employed with manipulated perceptual goals.
  • Neural activity was measured, and a drift diffusion model was utilized.
  • Anticipatory activity in the nucleus accumbens was assessed.

Main Results:

  • Motivation biased perceptual judgments, even when accuracy was rewarded.
  • Neural activity selective for motivationally relevant categories increased.
  • Perceptual bias correlated with category-selective neural activity, while response bias linked to nucleus accumbens activity.

Conclusions:

  • Motivation can lead to biased neural representations, altering perception.
  • The drive for reward can result in inaccurate world representations.
  • A computational framework distinguishes neural correlates of perceptual and response biases.