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A temporal basis for Weber's law in value perception.

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Area of Science:

  • Psychophysics
  • Behavioral Ecology
  • Decision Neuroscience

Background:

  • Weber's law describes stimulus perception proportionality.
  • This principle is thought to influence reward and time perception.
  • Inaccurate perception of rewards and delays affects decision-making.

Purpose of the Study:

  • To analyze the impact of sensory, time estimation, and integration noise on reward perception.
  • To investigate how these noise sources affect subjective value perception using the TIMERR model.
  • To analytically prove that reward magnitude, time, and subjective value perception adhere to Weber's law.

Main Methods:

  • Utilized the ecological decision-making theory (TIMERR).
  • Analyzed multiple noise sources: sensory, time estimation, and integration noise.
  • Employed analytical proofs within an accumulator model with balanced Poisson feedback.

Main Results:

  • Perception precision for reward magnitude correlates with time perception precision.
  • Weber's law in time estimation can induce Weber's law in value perception.
  • Sensory integration noise and time estimation noise lead to Weber's law in reward magnitude perception.

Conclusions:

  • Noise in reward magnitude and delay perception results in Weber's law for subjective value.
  • The study analytically demonstrates that perception of reward magnitude, time, and subjective value changes follow Weber's law.
  • Reward history influences the correlation between reward magnitude and time perception precision.